, Average Retail Price   ,, Average Retail Price   ,, Average Retail Price   ,, Average Retail Price   ,,                        ,,                        ,
                    , of Electricity, Reside ,, of Electricity, Commer ,, of Electricity, Indust ,, of Electricity, Transp ,, Average Retail Price   ,, Average Retail Price   ,
                    , ntial Sector           ,, cial Sector            ,, rial Sector            ,, ortation Sector        ,, of Electricity, Other  ,, of Electricity, Total  ,
                    , Cents per Kilowatthour ,, Cents per Kilowatthour ,, Cents per Kilowatthour ,, Cents per Kilowatthour ,, Cents per Kilowatthour ,, Cents per Kilowatthour ,
                    , Including Taxes        ,, Including Taxes        ,, Including Taxes        ,, Including Taxes        ,, Including Taxes        ,, Including Taxes        ,
                    ,  Dec.1973 to Dec.1.2011,,  Dec.1973 to Dec.1.2011,,  Dec.1973 to Dec.1.2011,,  Dec.2003 to Dec.1.2011,,  Dec.1973 to Dec.1.2002,,  Dec.1973 to Dec.1.2011,
          ,                        ,,                        ,,                        ,,                        ,,                        ,,                        ,
2011-05             ,            12.03,       ,            10.26,       ,             6.76,       ,            10.80,       ,                    na,  ,             9.87,       
2011-04             ,            11.79,       ,            10.06,       ,             6.58,       ,            10.33,       ,                    na,  ,             9.65,       
2011-03             ,            11.64,       ,            10.05,       ,             6.59,       ,            10.85,       ,                    na,  ,             9.66,       
2011-02             ,            11.20,       ,            10.11,       ,             6.72,       ,            10.85,       ,                    na,  ,             9.70,       
2011-01             ,            10.99,       ,             9.88,       ,             6.73,       ,            10.52,       ,                    na,  ,             9.62,       
2010-12             ,            11.04,       ,             9.81,       ,             6.59,       ,            10.28,       ,                    na,  ,             9.51,       
2010-11             ,            11.70,       ,            10.07,       ,             6.59,       ,            10.42,       ,                    na,  ,             9.62,       
2010-10             ,            11.93,       ,            10.29,       ,             6.82,       ,            10.86,       ,                    na,  ,             9.86,       
2010-09             ,            11.97,       ,            10.62,       ,             7.04,       ,            11.39,       ,                    na,  ,            10.24,       
2010-08             ,            12.04,       ,            10.74,       ,             7.18,       ,            11.51,       ,                    na,  ,            10.45,       
2010-07             ,            12.03,       ,            10.76,       ,             7.28,       ,            11.49,       ,                    na,  ,            10.50,       
2010-06             ,            11.95,       ,            10.61,       ,             7.00,       ,            11.36,       ,                    na,  ,            10.23,       
2010-05             ,            11.97,       ,            10.24,       ,             6.66,       ,            10.99,       ,                    na,  ,             9.79,       
2010-04             ,            11.76,       ,             9.99,       ,             6.59,       ,            11.25,       ,                    na,  ,             9.58,       
2010-03             ,            11.21,       ,            10.08,       ,             6.51,       ,            10.82,       ,                    na,  ,             9.57,       
2010-02             ,            10.95,       ,             9.93,       ,             6.55,       ,            10.78,       ,                    na,  ,             9.52,       
2010-01             ,            10.56,       ,             9.63,       ,             6.53,       ,            10.49,       ,                    na,  ,             9.34,       
2009-12             ,            10.89,       ,             9.69,       ,             6.49,       ,            10.47,       ,                    na,  ,             9.38,       
2009-11             ,            11.30,       ,             9.81,       ,             6.43,       ,            10.50,       ,                    na,  ,             9.37,       
2009-10             ,            11.66,       ,            10.17,       ,             6.64,       ,            10.84,       ,                    na,  ,             9.70,       
2009-09             ,            11.95,       ,            10.46,       ,             6.92,       ,            10.61,       ,                    na,  ,            10.10,       
2009-08             ,            11.96,       ,            10.55,       ,             7.07,       ,            10.61,       ,                    na,  ,            10.28,       
2009-07             ,            11.85,       ,            10.59,       ,             7.09,       ,            11.02,       ,                    na,  ,            10.30,       
2009-06             ,            11.80,       ,            10.47,       ,             7.07,       ,            10.69,       ,                    na,  ,            10.13,       
2009-05             ,            11.77,       ,            10.07,       ,             6.79,       ,            11.18,       ,                    na,  ,             9.76,       
2009-04             ,            11.51,       ,             9.91,       ,             6.69,       ,            10.48,       ,                    na,  ,             9.57,       
2009-03             ,            11.30,       ,            10.00,       ,             6.76,       ,            10.55,       ,                    na,  ,             9.65,       
2009-02             ,            11.15,       ,            10.14,       ,             6.89,       ,            10.47,       ,                    na,  ,             9.74,       
2009-01             ,            10.95,       ,             9.96,       ,             6.88,       ,            10.42,       ,                    na,  ,             9.66,       
2008-12             ,            10.90,       ,            10.06,       ,             6.67,       ,            10.76,       ,                    na,  ,             9.57,       
2008-11             ,            11.43,       ,            10.25,       ,             6.85,       ,            10.21,       ,                    na,  ,             9.68,       
2008-10             ,            11.81,       ,            10.58,       ,             7.04,       ,            10.27,       ,                    na,  ,             9.96,       
2008-09             ,            11.90,       ,            10.86,       ,             7.16,       ,            11.67,       ,                    na,  ,            10.26,       
2008-08             ,            12.06,       ,            11.17,       ,             7.39,       ,            12.12,       ,                    na,  ,            10.58,       
2008-07             ,            12.05,       ,            11.16,       ,             7.62,       ,            11.89,       ,                    na,  ,            10.65,       
2008-06             ,            11.75,       ,            10.97,       ,             7.21,       ,            11.72,       ,                    na,  ,            10.26,       
2008-05             ,            11.39,       ,            10.13,       ,             6.64,       ,            10.67,       ,                    na,  ,             9.47,       
2008-04             ,            10.92,       ,             9.90,       ,             6.49,       ,            10.09,       ,                    na,  ,             9.21,       
2008-03             ,            10.47,       ,             9.72,       ,             6.32,       ,            10.27,       ,                    na,  ,             9.03,       
2008-02             ,            10.19,       ,             9.58,       ,             6.22,       ,            10.01,       ,                    na,  ,             8.92,       
2008-01             ,            10.15,       ,             9.51,       ,             6.21,       ,             9.34,       ,                    na,  ,             8.92,       
2007-12             ,            10.33,       ,             9.42,       ,             6.26,       ,             9.19,       ,                    na,  ,             8.91,       
2007-11             ,            10.70,       ,             9.50,       ,             6.28,       ,             8.76,       ,                    na,  ,             8.94,       
2007-10             ,            10.82,       ,             9.77,       ,             6.46,       ,             9.61,       ,                    na,  ,             9.17,       
2007-09             ,            10.96,       ,             9.90,       ,             6.52,       ,             9.76,       ,                    na,  ,             9.43,       
2007-08             ,            11.07,       ,            10.07,       ,             6.84,       ,             9.98,       ,                    na,  ,             9.68,       
2007-07             ,            11.07,       ,            10.14,       ,             6.71,       ,            10.57,       ,                    na,  ,             9.64,       
2007-06             ,            11.09,       ,             9.95,       ,             6.59,       ,             9.88,       ,                    na,  ,             9.45,       
2007-05             ,            10.77,       ,             9.51,       ,             6.27,       ,             9.84,       ,                    na,  ,             8.96,       
2007-04             ,            10.63,       ,             9.38,       ,             6.19,       ,             9.42,       ,                    na,  ,             8.82,       
2007-03             ,            10.27,       ,             9.35,       ,             6.22,       ,            11.04,       ,                    na,  ,             8.80,       
2007-02             ,             9.89,       ,             9.34,       ,             6.16,       ,             9.38,       ,                    na,  ,             8.74,       
2007-01             ,            10.06,       ,             9.12,       ,             6.13,       ,             8.92,       ,                    na,  ,             8.71,       
2006-12             ,             9.84,       ,             9.08,       ,             6.00,       ,             9.56,       ,                    na,  ,             8.55,       
2006-11             ,            10.18,       ,             9.24,       ,             6.04,       ,             9.40,       ,                    na,  ,             8.63,       
2006-10             ,            10.58,       ,             9.51,       ,             6.16,       ,            10.02,       ,                    na,  ,             8.89,       
2006-09             ,            10.94,       ,             9.89,       ,             6.37,       ,            10.11,       ,                    na,  ,             9.32,       
2006-08             ,            10.94,       ,            10.04,       ,             6.65,       ,            10.20,       ,                    na,  ,             9.58,       
2006-07             ,            10.96,       ,             9.97,       ,             6.61,       ,            10.30,       ,                    na,  ,             9.55,       
2006-06             ,            10.85,       ,             9.88,       ,             6.41,       ,             9.82,       ,                    na,  ,             9.30,       
2006-05             ,            10.61,       ,             9.22,       ,             6.00,       ,             9.12,       ,                    na,  ,             8.71,       
2006-04             ,            10.32,       ,             9.17,       ,             5.93,       ,             8.97,       ,                    na,  ,             8.56,       
2006-03             ,             9.87,       ,             9.06,       ,             5.88,       ,             9.06,       ,                    na,  ,             8.44,       
2006-02             ,             9.80,       ,             9.14,       ,             5.98,       ,             9.18,       ,                    na,  ,             8.49,       
2006-01             ,             9.55,       ,             8.87,       ,             5.78,       ,             8.75,       ,                    na,  ,             8.31,       
2005-12             ,             9.25,       ,             8.81,       ,             5.72,       ,             7.16,       ,                    na,  ,             8.14,       
2005-11             ,             9.74,       ,             8.81,       ,             5.71,       ,             7.05,       ,                    na,  ,             8.17,       
2005-10             ,             9.73,       ,             8.96,       ,             5.86,       ,             8.23,       ,                    na,  ,             8.33,       
2005-09             ,             9.91,       ,             9.24,       ,             5.99,       ,             8.00,       ,                    na,  ,             8.63,       
2005-08             ,             9.91,       ,             9.18,       ,             6.02,       ,             7.86,       ,                    na,  ,             8.68,       
2005-07             ,             9.75,       ,             9.07,       ,             5.95,       ,             8.07,       ,                    na,  ,             8.57,       
2005-06             ,             9.77,       ,             8.97,       ,             5.69,       ,             7.33,       ,                    na,  ,             8.35,       
2005-05             ,             9.55,       ,             8.48,       ,             5.29,       ,             7.08,       ,                    na,  ,             7.82,       
2005-04             ,             9.21,       ,             8.29,       ,             5.17,       ,             7.16,       ,                    na,  ,             7.62,       
2005-03             ,             8.86,       ,             8.21,       ,             5.14,       ,             7.11,       ,                    na,  ,             7.55,       
2005-02             ,             8.74,       ,             8.21,       ,             5.09,       ,             7.04,       ,                    na,  ,             7.53,       
2005-01             ,             8.50,       ,             7.98,       ,             5.07,       ,             6.87,       ,                    na,  ,             7.41,       
2004-12             ,             8.58,       ,             7.82,       ,             5.14,       ,             7.12,       ,                    na,  ,             7.36,       
2004-11             ,             8.96,       ,             8.04,       ,             5.09,       ,             7.15,       ,                    na,  ,             7.42,       
2004-10             ,             9.05,       ,             8.23,       ,             5.25,       ,             7.32,       ,                    na,  ,             7.60,       
2004-09             ,             9.39,       ,             8.54,       ,             5.41,       ,             7.42,       ,                    na,  ,             7.97,       
2004-08             ,             9.50,       ,             8.70,       ,             5.65,       ,             7.76,       ,                    na,  ,             8.18,       
2004-07             ,             9.36,       ,             8.63,       ,             5.63,       ,             7.84,       ,                    na,  ,             8.11,       
2004-06             ,             9.29,       ,             8.49,       ,             5.46,       ,             7.28,       ,                    na,  ,             7.93,       
2004-05             ,             9.07,       ,             7.99,       ,             5.18,       ,             6.66,       ,                    na,  ,             7.46,       
2004-04             ,             8.93,       ,             7.89,       ,             5.09,       ,             7.16,       ,                    na,  ,             7.34,       
2004-03             ,             8.62,       ,             7.92,       ,             5.04,       ,             6.70,       ,                    na,  ,             7.30,       
2004-02             ,             8.33,       ,             7.85,       ,             5.04,       ,             7.13,       ,                    na,  ,             7.25,       
2004-01             ,             8.24,       ,             7.70,       ,             5.01,       ,             6.62,       ,                    na,  ,             7.22,       
2003-12             ,             8.30,       ,             7.70,       ,             4.87,       ,             7.26,       ,                    na,  ,             7.14,       
2003-11             ,             8.72,       ,             7.85,       ,             4.86,       ,             7.24,       ,                    na,  ,             7.19,       
2003-10             ,             8.85,       ,             8.09,       ,             5.07,       ,             7.63,       ,                    na,  ,             7.39,       
2003-09             ,             8.92,       ,             8.15,       ,             5.19,       ,             7.65,       ,                    na,  ,             7.61,       
2003-08             ,             9.22,       ,             8.46,       ,             5.48,       ,             7.84,       ,                    na,  ,             7.97,       
2003-07             ,             9.21,       ,             8.55,       ,             5.54,       ,             8.01,       ,                    na,  ,             8.02,       
2003-06             ,             9.25,       ,             8.44,       ,             5.28,       ,             7.75,       ,                    na,  ,             7.78,       
2003-05             ,             8.99,       ,             8.06,       ,             5.06,       ,             7.57,       ,                    na,  ,             7.42,       
2003-04             ,             8.82,       ,             7.93,       ,             4.99,       ,             7.61,       ,                    na,  ,             7.27,       
2003-03             ,             8.35,       ,             7.78,       ,             5.02,       ,             7.32,       ,                    na,  ,             7.16,       
2003-02             ,             8.02,       ,             7.65,       ,             4.99,       ,             7.42,       ,                    na,  ,             7.05,       
2003-01             ,             8.00,       ,             7.45,       ,             4.92,       ,             7.23,       ,                    na,  ,             7.00,       
2002-12             ,             8.08,       ,             7.59,       ,             4.72,       ,                    na,  ,             6.92,       ,             6.96,       
2002-11             ,             8.31,       ,             7.64,       ,             4.71,       ,                    na,  ,             6.67,       ,             6.94,       
2002-10             ,             8.47,       ,             8.00,       ,             4.91,       ,                    na,  ,             6.75,       ,             7.20,       
2002-09             ,             8.59,       ,             8.00,       ,             4.98,       ,                    na,  ,             6.73,       ,             7.36,       
2002-08             ,             8.72,       ,             8.24,       ,             5.15,       ,                    na,  ,             6.78,       ,             7.58,       
2002-07             ,             8.82,       ,             8.33,       ,             5.27,       ,                    na,  ,             6.83,       ,             7.68,       
2002-06             ,             8.73,       ,             8.18,       ,             5.03,       ,                    na,  ,             6.96,       ,             7.45,       
2002-05             ,             8.64,       ,             7.84,       ,             4.78,       ,                    na,  ,             6.80,       ,             7.11,       
2002-04             ,             8.37,       ,             7.68,       ,             4.73,       ,                    na,  ,             6.74,       ,             6.95,       
2002-03             ,             8.17,       ,             7.72,       ,             4.73,       ,                    na,  ,             6.64,       ,             6.95,       
2002-02             ,             8.19,       ,             7.68,       ,             4.76,       ,                    na,  ,             6.67,       ,             6.97,       
2002-01             ,             8.07,       ,             7.49,       ,             4.73,       ,                    na,  ,             6.44,       ,             6.95,       
2001-12             ,             8.29,       ,             7.66,       ,             4.78,       ,                    na,  ,             6.99,       ,             7.03,       
2001-11             ,             8.48,       ,             7.73,       ,             4.78,       ,                    na,  ,             7.10,       ,             7.02,       
2001-10             ,             8.84,       ,             8.27,       ,             5.06,       ,                    na,  ,             7.52,       ,             7.43,       
2001-09             ,             8.92,       ,             8.22,       ,             5.30,       ,                    na,  ,             7.23,       ,             7.62,       
2001-08             ,             9.01,       ,             8.35,       ,             5.49,       ,                    na,  ,             7.58,       ,             7.84,       
2001-07             ,             9.03,       ,             8.41,       ,             5.56,       ,                    na,  ,             7.70,       ,             7.87,       
2001-06             ,             9.07,       ,             8.13,       ,             5.23,       ,                    na,  ,             7.51,       ,             7.58,       
2001-05             ,             8.83,       ,             7.77,       ,             5.00,       ,                    na,  ,             7.14,       ,             7.17,       
2001-04             ,             8.46,       ,             7.73,       ,             4.87,       ,                    na,  ,             7.04,       ,             7.02,       
2001-03             ,             8.32,       ,             7.70,       ,             4.87,       ,                    na,  ,             7.05,       ,             7.01,       
2001-02             ,             8.04,       ,             7.51,       ,             4.81,       ,                    na,  ,             6.94,       ,             6.87,       
2001-01             ,             7.73,       ,             7.25,       ,             4.75,       ,                    na,  ,             6.48,       ,             6.75,       
2000-12             ,             7.82,       ,             7.52,       ,             4.88,       ,                    na,  ,             6.57,       ,             6.85,       
2000-11             ,             8.15,       ,             7.34,       ,             4.59,       ,                    na,  ,             6.40,       ,             6.66,       
2000-10             ,             8.49,       ,             7.67,       ,             4.74,       ,                    na,  ,             6.66,       ,             6.94,       
2000-09             ,             8.51,       ,             7.73,       ,             4.84,       ,                    na,  ,             6.71,       ,             7.11,       
2000-08             ,             8.63,       ,             7.93,       ,             5.07,       ,                    na,  ,             6.66,       ,             7.34,       
2000-07             ,             8.61,       ,             7.76,       ,             4.95,       ,                    na,  ,             6.65,       ,             7.25,       
2000-06             ,             8.56,       ,             7.70,       ,             4.75,       ,                    na,  ,             6.74,       ,             7.06,       
2000-05             ,             8.34,       ,             7.25,       ,             4.51,       ,                    na,  ,             6.42,       ,             6.64,       
2000-04             ,             8.15,       ,             7.05,       ,             4.32,       ,                    na,  ,             6.74,       ,             6.43,       
2000-03             ,             8.09,       ,             7.03,       ,             4.31,       ,                    na,  ,             6.45,       ,             6.44,       
2000-02             ,             7.71,       ,             6.96,       ,             4.32,       ,                    na,  ,             6.44,       ,             6.39,       
2000-01             ,             7.66,       ,             6.93,       ,             4.31,       ,                    na,  ,             6.20,       ,             6.40,       
1999-12             ,             7.94,       ,             6.88,       ,             4.19,       ,                    na,  ,                    na,  ,             6.41,       
1999-11             ,             8.09,       ,             7.13,       ,             4.27,       ,                    na,  ,                    na,  ,             6.39,       
1999-10             ,             8.37,       ,             7.41,       ,             4.47,       ,                    na,  ,                    na,  ,             6.70,       
1999-09             ,             8.36,       ,             7.45,       ,             4.57,       ,                    na,  ,                    na,  ,             6.87,       
1999-08             ,             8.42,       ,             7.49,       ,             4.87,       ,                    na,  ,                    na,  ,             7.08,       
1999-07             ,             8.49,       ,             7.56,       ,             4.80,       ,                    na,  ,                    na,  ,             7.11,       
1999-06             ,             8.43,       ,             7.42,       ,             4.54,       ,                    na,  ,                    na,  ,             6.83,       
1999-05             ,             8.27,       ,             7.21,       ,             4.30,       ,                    na,  ,                    na,  ,             6.50,       
1999-04             ,             8.09,       ,             7.08,       ,             4.24,       ,                    na,  ,                    na,  ,             6.40,       
1999-03             ,             7.90,       ,             7.15,       ,             4.19,       ,                    na,  ,                    na,  ,             6.43,       
1999-02             ,             7.92,       ,             7.18,       ,             4.32,       ,                    na,  ,                    na,  ,             6.50,       
1999-01             ,             7.58,       ,             6.99,       ,             4.28,       ,                    na,  ,                    na,  ,             6.42,       
1998-12             ,             7.92,       ,             7.11,       ,             4.30,       ,                    na,  ,                    na,  ,             6.46,       
1998-11             ,             8.04,       ,             7.11,       ,             4.32,       ,                    na,  ,                    na,  ,             6.39,       
1998-10             ,             8.25,       ,             7.44,       ,             4.42,       ,                    na,  ,                    na,  ,             6.69,       
1998-09             ,             8.43,       ,             7.55,       ,             4.62,       ,                    na,  ,                    na,  ,             6.95,       
1998-08             ,             8.57,       ,             7.67,       ,             4.78,       ,                    na,  ,                    na,  ,             7.14,       
1998-07             ,             8.58,       ,             7.69,       ,             4.85,       ,                    na,  ,                    na,  ,             7.21,       
1998-06             ,             8.53,       ,             7.61,       ,             4.65,       ,                    na,  ,                    na,  ,             6.97,       
1998-05             ,             8.49,       ,             7.45,       ,             4.41,       ,                    na,  ,                    na,  ,             6.67,       
1998-04             ,             8.23,       ,             7.31,       ,             4.30,       ,                    na,  ,                    na,  ,             6.51,       
1998-03             ,             8.01,       ,             7.28,       ,             4.33,       ,                    na,  ,                    na,  ,             6.53,       
1998-02             ,             7.97,       ,             7.29,       ,             4.31,       ,                    na,  ,                    na,  ,             6.52,       
1998-01             ,             7.87,       ,             7.22,       ,             4.36,       ,                    na,  ,                    na,  ,             6.57,       
1997-12             ,             8.03,       ,             7.24,       ,             4.36,       ,                    na,  ,                    na,  ,             6.60,       
1997-11             ,             8.25,       ,             7.43,       ,             4.45,       ,                    na,  ,                    na,  ,             6.65,       
1997-10             ,             8.59,       ,             7.66,       ,             4.61,       ,                    na,  ,                    na,  ,             6.90,       
1997-09             ,             8.75,       ,             7.86,       ,             4.73,       ,                    na,  ,                    na,  ,             7.12,       
1997-08             ,             8.80,       ,             7.91,       ,             4.76,       ,                    na,  ,                    na,  ,             7.23,       
1997-07             ,             8.74,       ,             7.86,       ,             4.82,       ,                    na,  ,                    na,  ,             7.25,       
1997-06             ,             8.91,       ,             7.88,       ,             4.61,       ,                    na,  ,                    na,  ,             7.08,       
1997-05             ,             8.65,       ,             7.58,       ,             4.39,       ,                    na,  ,                    na,  ,             6.72,       
1997-04             ,             8.38,       ,             7.40,       ,             4.33,       ,                    na,  ,                    na,  ,             6.59,       
1997-03             ,             8.24,       ,             7.44,       ,             4.41,       ,                    na,  ,                    na,  ,             6.66,       
1997-02             ,             7.98,       ,             7.38,       ,             4.41,       ,                    na,  ,                    na,  ,             6.61,       
1997-01             ,             7.87,       ,             7.27,       ,             4.41,       ,                    na,  ,                    na,  ,             6.62,       
1996-12             ,             7.99,       ,             7.29,       ,             4.38,       ,                    na,  ,                    na,  ,             6.58,       
1996-11             ,             8.25,       ,             7.52,       ,             4.45,       ,                    na,  ,                    na,  ,             6.65,       
1996-10             ,             8.67,       ,             7.84,       ,             4.61,       ,                    na,  ,                    na,  ,             6.91,       
1996-09             ,             8.79,       ,             7.96,       ,             4.78,       ,                    na,  ,                    na,  ,             7.16,       
1996-08             ,             8.86,       ,             7.99,       ,             4.84,       ,                    na,  ,                    na,  ,             7.30,       
1996-07             ,             8.73,       ,             7.95,       ,             4.88,       ,                    na,  ,                    na,  ,             7.27,       
1996-06             ,             8.65,       ,             7.72,       ,             4.73,       ,                    na,  ,                    na,  ,             7.03,       
1996-05             ,             8.54,       ,             7.62,       ,             4.54,       ,                    na,  ,                    na,  ,             6.77,       
1996-04             ,             8.24,       ,             7.48,       ,             4.46,       ,                    na,  ,                    na,  ,             6.63,       
1996-03             ,             8.09,       ,             7.46,       ,             4.49,       ,                    na,  ,                    na,  ,             6.65,       
1996-02             ,             7.81,       ,             7.39,       ,             4.50,       ,                    na,  ,                    na,  ,             6.60,       
1996-01             ,             7.75,       ,             7.31,       ,             4.47,       ,                    na,  ,                    na,  ,             6.61,       
1995-12             ,             8.02,       ,             7.36,       ,             4.48,       ,                    na,  ,                    na,  ,             6.64,       
1995-11             ,             8.26,       ,             7.60,       ,             4.51,       ,                    na,  ,                    na,  ,             6.70,       
1995-10             ,             8.65,       ,             7.85,       ,             4.71,       ,                    na,  ,                    na,  ,             6.95,       
1995-09             ,             8.57,       ,             7.84,       ,             4.79,       ,                    na,  ,                    na,  ,             7.08,       
1995-08             ,             8.78,       ,             7.95,       ,             4.97,       ,                    na,  ,                    na,  ,             7.34,       
1995-07             ,             8.80,       ,             8.06,       ,             4.95,       ,                    na,  ,                    na,  ,             7.35,       
1995-06             ,             8.72,       ,             7.95,       ,             4.82,       ,                    na,  ,                    na,  ,             7.10,       
1995-05             ,             8.53,       ,             7.64,       ,             4.54,       ,                    na,  ,                    na,  ,             6.74,       
1995-04             ,             8.41,       ,             7.50,       ,             4.51,       ,                    na,  ,                    na,  ,             6.65,       
1995-03             ,             8.14,       ,             7.53,       ,             4.53,       ,                    na,  ,                    na,  ,             6.66,       
1995-02             ,             8.01,       ,             7.49,       ,             4.55,       ,                    na,  ,                    na,  ,             6.68,       
1995-01             ,             7.85,       ,             7.33,       ,             4.48,       ,                    na,  ,                    na,  ,             6.60,       
1994-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1994-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1993-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1992-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1991-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1990-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1989-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1988-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1987-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1986-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1985-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-12             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-11             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-10             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-09             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-08             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-07             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-02             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1984-01             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1983-12             ,             7.00,       ,             6.90,       ,             4.80,       ,                    na,  ,                    na,  ,             6.10,       
1983-11             ,             7.30,       ,             7.10,       ,             4.80,       ,                    na,  ,                    na,  ,             6.20,       
1983-10             ,             7.50,       ,             7.20,       ,             5.00,       ,                    na,  ,                    na,  ,             6.40,       
1983-09             ,             7.60,       ,             7.20,       ,             5.00,       ,                    na,  ,                    na,  ,             6.50,       
1983-08             ,             7.50,       ,             7.10,       ,             5.00,       ,                    na,  ,                    na,  ,             6.50,       
1983-07             ,             7.50,       ,             7.10,       ,             5.10,       ,                    na,  ,                    na,  ,             6.50,       
1983-06             ,             7.40,       ,             7.10,       ,             5.00,       ,                    na,  ,                    na,  ,             6.40,       
1983-05             ,             7.20,       ,             7.00,       ,             4.90,       ,                    na,  ,                    na,  ,             6.20,       
1983-04             ,             6.90,       ,             6.90,       ,             4.90,       ,                    na,  ,                    na,  ,             6.10,       
1983-03             ,             6.90,       ,             6.90,       ,             5.00,       ,                    na,  ,                    na,  ,             6.20,       
1983-02             ,             6.70,       ,             6.90,       ,             5.00,       ,                    na,  ,                    na,  ,             6.10,       
1983-01             ,             6.70,       ,             6.80,       ,             5.00,       ,                    na,  ,                    na,  ,             6.10,       
1982-12             ,             6.70,       ,             6.80,       ,             5.00,       ,                    na,  ,                    na,  ,             6.10,       
1982-11             ,             6.90,       ,             7.00,       ,             4.90,       ,                    na,  ,                    na,  ,             6.10,       
1982-10             ,             7.20,       ,             7.10,       ,             5.10,       ,                    na,  ,                    na,  ,             6.30,       
1982-09             ,             7.20,       ,             7.00,       ,             5.30,       ,                    na,  ,                    na,  ,             6.40,       
1982-08             ,             7.20,       ,             6.90,       ,             5.20,       ,                    na,  ,                    na,  ,             6.40,       
1982-07             ,             7.20,       ,             7.00,       ,             5.10,       ,                    na,  ,                    na,  ,             6.40,       
1982-06             ,             7.10,       ,             6.90,       ,             4.90,       ,                    na,  ,                    na,  ,             6.20,       
1982-05             ,             6.90,       ,             6.90,       ,             5.00,       ,                    na,  ,                    na,  ,             6.10,       
1982-04             ,             6.70,       ,             6.80,       ,             4.80,       ,                    na,  ,                    na,  ,             6.00,       
1982-03             ,             6.60,       ,             6.80,       ,             4.80,       ,                    na,  ,                    na,  ,             6.00,       
1982-02             ,             6.40,       ,             6.70,       ,             4.70,       ,                    na,  ,                    na,  ,             5.80,       
1982-01             ,             6.20,       ,             6.50,       ,             4.70,       ,                    na,  ,                    na,  ,             5.70,       
1981-12             ,             6.30,       ,             6.50,       ,             4.60,       ,                    na,  ,                    na,  ,             5.70,       
1981-11             ,             6.40,       ,             6.50,       ,             4.50,       ,                    na,  ,                    na,  ,             5.60,       
1981-10             ,             6.60,       ,             6.50,       ,             4.40,       ,                    na,  ,                    na,  ,             5.60,       
1981-09             ,             6.60,       ,             6.50,       ,             4.50,       ,                    na,  ,                    na,  ,             5.70,       
1981-08             ,             6.60,       ,             6.50,       ,             4.50,       ,                    na,  ,                    na,  ,             5.80,       
1981-07             ,             6.60,       ,             6.50,       ,             4.50,       ,                    na,  ,                    na,  ,             5.80,       
1981-06             ,             6.50,       ,             6.50,       ,             4.40,       ,                    na,  ,                    na,  ,             5.60,       
1981-05             ,             6.30,       ,             6.30,       ,             4.20,       ,                    na,  ,                    na,  ,             5.40,       
1981-04             ,             6.00,       ,             6.10,       ,             4.10,       ,                    na,  ,                    na,  ,             5.20,       
1981-03             ,             5.80,       ,             6.00,       ,             4.00,       ,                    na,  ,                    na,  ,             5.10,       
1981-02             ,             5.50,       ,             5.80,       ,             4.00,       ,                    na,  ,                    na,  ,             5.00,       
1981-01             ,             5.40,       ,             5.70,       ,             3.90,       ,                    na,  ,                    na,  ,             5.00,       
1980-12             ,             5.50,       ,             5.70,       ,             3.90,       ,                    na,  ,                    na,  ,             4.90,       
1980-11             ,             5.60,       ,             5.70,       ,             3.90,       ,                    na,  ,                    na,  ,             4.90,       
1980-10             ,             5.70,       ,             5.80,       ,             3.80,       ,                    na,  ,                    na,  ,             5.00,       
1980-09             ,             5.70,       ,             5.70,       ,             3.90,       ,                    na,  ,                    na,  ,             5.00,       
1980-08             ,             5.70,       ,             5.60,       ,             3.90,       ,                    na,  ,                    na,  ,             5.10,       
1980-07             ,             5.70,       ,             5.70,       ,             3.90,       ,                    na,  ,                    na,  ,             5.00,       
1980-06             ,             5.60,       ,             5.60,       ,             3.80,       ,                    na,  ,                    na,  ,             4.90,       
1980-05             ,             5.40,       ,             5.40,       ,             3.60,       ,                    na,  ,                    na,  ,             4.60,       
1980-04             ,             5.10,       ,             5.30,       ,             3.50,       ,                    na,  ,                    na,  ,             4.50,       
1980-03             ,             4.90,       ,             5.20,       ,             3.50,       ,                    na,  ,                    na,  ,             4.40,       
1980-02             ,             4.70,       ,             5.00,       ,             3.30,       ,                    na,  ,                    na,  ,             4.30,       
1980-01             ,             4.70,       ,             4.90,       ,             3.30,       ,                    na,  ,                    na,  ,             4.20,       
1979-12             ,             4.70,       ,             4.90,       ,             3.30,       ,                    na,  ,                    na,  ,             4.20,       
1979-11             ,             4.80,       ,             4.90,       ,             3.20,       ,                    na,  ,                    na,  ,             4.10,       
1979-10             ,             5.00,       ,             4.90,       ,             3.20,       ,                    na,  ,                    na,  ,             4.20,       
1979-09             ,             5.00,       ,             4.80,       ,             3.20,       ,                    na,  ,                    na,  ,             4.20,       
1979-08             ,             4.90,       ,             4.80,       ,             3.10,       ,                    na,  ,                    na,  ,             4.20,       
1979-07             ,             4.90,       ,             4.80,       ,             3.10,       ,                    na,  ,                    na,  ,             4.20,       
1979-06             ,             4.90,       ,             4.70,       ,             3.00,       ,                    na,  ,                    na,  ,             4.00,       
1979-05             ,             4.70,       ,             4.70,       ,             3.00,       ,                    na,  ,                    na,  ,             3.90,       
1979-04             ,             4.50,       ,             4.50,       ,             2.90,       ,                    na,  ,                    na,  ,             3.80,       
1979-03             ,             4.30,       ,             4.40,       ,             2.90,       ,                    na,  ,                    na,  ,             3.80,       
1979-02             ,             4.10,       ,             4.30,       ,             2.90,       ,                    na,  ,                    na,  ,             3.70,       
1979-01             ,             4.10,       ,             4.30,       ,             2.80,       ,                    na,  ,                    na,  ,             3.60,       
1978-12             ,             4.20,       ,             4.30,       ,             2.80,       ,                    na,  ,                    na,  ,             3.60,       
1978-11             ,             4.40,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.70,       
1978-10             ,             4.50,       ,             4.50,       ,             2.80,       ,                    na,  ,                    na,  ,             3.70,       
1978-09             ,             4.50,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.80,       
1978-08             ,             4.50,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.80,       
1978-07             ,             4.50,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.80,       
1978-06             ,             4.50,       ,             4.50,       ,             2.80,       ,                    na,  ,                    na,  ,             3.80,       
1978-05             ,             4.50,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.70,       
1978-04             ,             4.30,       ,             4.40,       ,             2.80,       ,                    na,  ,                    na,  ,             3.70,       
1978-03             ,             4.10,       ,             4.30,       ,             2.90,       ,                    na,  ,                    na,  ,             3.70,       
1978-02             ,             3.90,       ,             4.20,       ,             2.70,       ,                    na,  ,                    na,  ,             3.50,       
1978-01             ,             3.90,       ,             4.10,       ,             2.60,       ,                    na,  ,                    na,  ,             3.50,       
1977-12             ,             4.00,       ,             4.10,       ,             2.50,       ,                    na,  ,                    na,  ,             3.40,       
1977-11             ,             4.20,       ,             4.20,       ,             2.60,       ,                    na,  ,                    na,  ,             3.50,       
1977-10             ,             4.30,       ,             4.30,       ,             2.60,       ,                    na,  ,                    na,  ,             3.50,       
1977-09             ,             4.30,       ,             4.20,       ,             2.60,       ,                    na,  ,                    na,  ,             3.60,       
1977-08             ,             4.40,       ,             4.40,       ,             2.60,       ,                    na,  ,                    na,  ,             3.70,       
1977-07             ,             4.20,       ,             4.10,       ,             2.60,       ,                    na,  ,                    na,  ,             3.60,       
1977-06             ,             4.20,       ,             4.10,       ,             2.50,       ,                    na,  ,                    na,  ,             3.40,       
1977-05             ,             4.20,       ,             4.10,       ,             2.50,       ,                    na,  ,                    na,  ,             3.40,       
1977-04             ,             4.10,       ,             4.00,       ,             2.40,       ,                    na,  ,                    na,  ,             3.30,       
1977-03             ,             4.00,       ,             4.00,       ,             2.40,       ,                    na,  ,                    na,  ,             3.30,       
1977-02             ,             3.70,       ,             3.90,       ,             2.40,       ,                    na,  ,                    na,  ,             3.30,       
1977-01             ,             3.60,       ,             3.80,       ,             2.40,       ,                    na,  ,                    na,  ,             3.20,       
1976-12             ,             3.60,       ,             3.70,       ,             2.30,       ,                    na,  ,                    na,  ,             3.10,       
1976-11             ,             3.80,       ,             3.80,       ,             2.20,       ,                    na,  ,                    na,  ,             3.10,       
1976-10             ,             3.90,       ,             3.80,       ,             2.20,       ,                    na,  ,                    na,  ,             3.20,       
1976-09             ,             3.80,       ,             3.70,       ,             2.20,       ,                    na,  ,                    na,  ,             3.10,       
1976-08             ,             3.70,       ,             3.60,       ,             2.20,       ,                    na,  ,                    na,  ,             3.00,       
1976-07             ,             3.90,       ,             3.70,       ,             2.30,       ,                    na,  ,                    na,  ,             3.00,       
1976-06             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1976-05             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1976-04             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  
1976-03             ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,  ,                    na,