Year	Percent
1960-01-01	63.63640000000000
1961-01-01	66.27150000000000
1962-01-01	62.47830000000000
1963-01-01	58.81660000000000
1964-01-01	63.30710000000000
1965-01-01	66.87600000000000
1966-01-01	70.14090000000000
1967-01-01	68.50430000000000
1968-01-01	64.44620000000000
1969-01-01	64.80000000000000
1970-01-01	66.47430000000000
1971-01-01	64.22620000000000
1972-01-01	82.83350000000000
1973-01-01	120.85300000000000
1974-01-01	134.63000000000000
1975-01-01	140.06300000000000
1976-01-01	135.66700000000000
1977-01-01	133.24100000000000
1978-01-01	195.05300000000000
1979-01-01	332.39099999999996
1980-01-01	393.74600000000000
1981-01-01	126.98200000000001
1982-01-01	78.13990000000000
1983-01-01	74.02880000000000
1984-01-01	66.12070000000000
1985-01-01	66.12270000000000
1986-01-01	74.25920000000000
1987-01-01	83.38670000000000
1988-01-01	86.57410000000000
1989-01-01	87.84290000000000
1990-01-01	91.62940000000000
1991-01-01	96.38700000000000
1992-01-01	98.47770000000000
1993-01-01	103.00100000000000
1994-01-01	105.48800000000000
1995-01-01	102.81900000000000
1996-01-01	98.75890000000000
1997-01-01	95.97960000000000
1998-01-01	95.12820000000000
1999-01-01	93.99620000000000
2000-01-01	95.82810000000000
2001-01-01	99.34890000000000
2002-01-01	101.14200000000001
2003-01-01	100.38700000000000
2004-01-01	99.40299999999999
2005-01-01	100.28000000000000
2006-01-01	100.44100000000000
2007-01-01	104.01000000000000
2008-01-01	107.48400000000000
2009-01-01	104.66200000000000
2010-01-01	103.51299999999999
2011-01-01	102.20299999999999
2012-01-01	100.68000000000000
2013-01-01	98.66600000000000
2014-01-01	93.67910000000000
2015-01-01	91.51460000000000
2016-01-01	89.12490000000000