Year	Percent
1960-01-01	260.00000000000000
1961-01-01	281.77299999999997
1962-01-01	268.93600000000000
1963-01-01	244.08599999999998
1964-01-01	220.11700000000002
1965-01-01	149.21300000000000
1966-01-01	111.62000000000000
1967-01-01	107.52100000000000
1968-01-01	120.52400000000000
1969-01-01	87.19840000000000
1970-01-01	93.78860000000000
1971-01-01	103.80900000000000
1972-01-01	114.30600000000000
1973-01-01	129.11800000000000
1974-01-01	96.09790000000000
1975-01-01	100.25800000000000
1976-01-01	126.86399999999999
1977-01-01	128.23200000000000
1978-01-01	123.19000000000000
1979-01-01	119.74900000000000
1980-01-01	135.46100000000000
1981-01-01	135.87900000000000
1982-01-01	118.63300000000000
1983-01-01	102.39900000000000
1984-01-01	81.37770000000000
1985-01-01	70.05600000000000
1986-01-01	71.81930000000000
1987-01-01	79.64940000000000
1988-01-01	83.54080000000000
1989-01-01	79.93220000000000
1990-01-01	77.64930000000000
1991-01-01	82.88160000000000
1992-01-01	92.82110000000000
1993-01-01	99.28350000000000
1994-01-01	94.41870000000000
1995-01-01	95.56920000000000
1996-01-01	107.63100000000000
1997-01-01	113.15600000000000
1998-01-01	120.51500000000000
1999-01-01	119.37600000000000
2000-01-01	105.44900000000000
2001-01-01	95.59830000000000
2002-01-01	82.84500000000000
2003-01-01	78.10470000000000
2004-01-01	77.55120000000000
2005-01-01	76.88670000000000
2006-01-01	73.75620000000000
2007-01-01	74.43630000000000
2008-01-01	69.99310000000000
2009-01-01	62.16360000000000
2010-01-01	65.76020000000000
2011-01-01	75.15290000000000
2012-01-01	81.70830000000000
2013-01-01	84.90070000000000
2014-01-01	84.32880000000000
2015-01-01	82.86130000000000
2016-01-01	85.16850000000000