Year	Percent
1960-01-01	41.765900000000000
1961-01-01	41.639300000000000
1962-01-01	47.733900000000000
1963-01-01	54.246500000000000
1964-01-01	55.373600000000000
1965-01-01	57.076500000000000
1966-01-01	59.513800000000000
1967-01-01	63.413999999999994
1968-01-01	64.354700000000000
1969-01-01	65.204600000000000
1970-01-01	56.532900000000000
1971-01-01	57.958100000000000
1972-01-01	60.978600000000000
1973-01-01	62.228900000000000
1974-01-01	62.910600000000000
1975-01-01	63.838800000000000
1976-01-01	63.013500000000000
1977-01-01	64.833900000000000
1978-01-01	66.636100000000000
1979-01-01	68.337300000000000
1980-01-01	70.906900000000000
1981-01-01	73.689300000000000
1982-01-01	75.017500000000000
1983-01-01	76.024500000000000
1984-01-01	77.301100000000000
1985-01-01	78.915800000000000
1986-01-01	78.483300000000000
1987-01-01	79.297100000000000
1988-01-01	77.950200000000000
1989-01-01	77.321700000000000
1990-01-01	79.584900000000000
1991-01-01	102.187000000000010
1992-01-01	85.514400000000000
1993-01-01	90.928800000000000
1994-01-01	93.527000000000000
1995-01-01	95.660400000000000
1996-01-01	100.219000000000000
1997-01-01	104.912000000000000
1998-01-01	109.221000000000000
1999-01-01	115.553000000000000
2000-01-01	116.332000000000010
2001-01-01	111.139000000000000
2002-01-01	110.752000000000010
2003-01-01	109.868000000000000
2004-01-01	106.522000000000000
2005-01-01	104.437000000000010
2006-01-01	101.122999999999990
2007-01-01	96.624400000000000
2008-01-01	95.929900000000000
2009-01-01	99.000600000000000
2010-01-01	90.578900000000000
2011-01-01	84.416700000000000
2012-01-01	83.299300000000000
2013-01-01	81.484500000000000
2014-01-01	78.963000000000010
2015-01-01	76.998800000000000
2016-01-01	75.780500000000000