Year	Percent
1985-01-01	64.75050000000000
1986-01-01	64.59610000000000
1987-01-01	69.39850000000000
1988-01-01	66.47760000000000
1989-01-01	70.17480000000000
1990-01-01	75.39130000000000
1991-01-01	78.10730000000000
1992-01-01	75.78530000000000
1993-01-01	78.33790000000000
1994-01-01	78.21450000000000
1995-01-01	75.74020000000000
1996-01-01	80.38270000000000
1997-01-01	88.36310000000000
1998-01-01	97.57799999999999
1999-01-01	104.06299999999999
2000-01-01	104.83300000000000
2001-01-01	104.79500000000000
2002-01-01	107.82000000000000
2003-01-01	113.14200000000001
2004-01-01	112.36900000000000
2005-01-01	106.31000000000000
2006-01-01	101.11300000000000
2007-01-01	96.28720000000000
2008-01-01	97.23560000000000
2009-01-01	107.93500000000000
2010-01-01	115.67399999999999
2011-01-01	116.29600000000000
2012-01-01	119.83800000000000
2013-01-01	125.15700000000001
2014-01-01	131.56799999999998
2015-01-01	139.92400000000000
2016-01-01	149.06000000000000