Year	Percent
1960-01-01	128.60800000000000
1961-01-01	132.62200000000000
1962-01-01	126.24600000000001
1963-01-01	120.32500000000000
1964-01-01	119.62400000000000
1965-01-01	117.16200000000000
1966-01-01	115.87600000000000
1967-01-01	116.58900000000000
1968-01-01	116.51400000000000
1969-01-01	115.43299999999999
1970-01-01	109.60700000000001
1971-01-01	104.78200000000001
1972-01-01	103.17399999999999
1973-01-01	103.54500000000000
1974-01-01	104.33900000000000
1975-01-01	102.48100000000001
1976-01-01	99.33080000000000
1977-01-01	96.04630000000000
1978-01-01	92.15200000000000
1979-01-01	89.49880000000000
1980-01-01	88.57280000000000
1981-01-01	87.38730000000000
1982-01-01	86.39290000000000
1983-01-01	86.12410000000000
1984-01-01	86.01980000000000
1985-01-01	86.29270000000000
1986-01-01	86.54170000000000
1987-01-01	88.83770000000000
1988-01-01	92.27970000000000
1989-01-01	93.83350000000000
1990-01-01	95.10600000000001
1991-01-01	96.08400000000000
1992-01-01	96.57730000000000
1993-01-01	95.72770000000000
1994-01-01	93.43140000000000
1995-01-01	91.37899999999999
1996-01-01	89.61310000000000
1997-01-01	89.73680000000000
1998-01-01	90.22190000000000
1999-01-01	88.02930000000000
2000-01-01	84.85450000000000
2001-01-01	72.75220000000000
2002-01-01	57.14270000000000
2003-01-01	53.36420000000000
2004-01-01	51.31890000000000
2005-01-01	51.41480000000000
2006-01-01	52.41810000000000
2007-01-01	52.37850000000000
2008-01-01	52.33880000000000
2009-01-01	51.47000000000000
2010-01-01	49.86940000000000
2011-01-01	48.29720000000000
2012-01-01	47.31720000000000
2013-01-01	47.42510000000000
2014-01-01	47.37160000000000
2015-01-01	47.02280000000000
2016-01-01	46.70640000000000