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	78.43370000000000
1994-01-01	78.74950000000000
1995-01-01	76.98770000000000
1996-01-01	82.39310000000000
1997-01-01	90.46600000000001
1998-01-01	101.40200000000000
1999-01-01	110.14500000000000
2000-01-01	111.51899999999999
2001-01-01	113.08500000000000
2002-01-01	117.84299999999999
2003-01-01	123.47700000000000
2004-01-01	122.76600000000000
2005-01-01	116.46500000000000
2006-01-01	110.69400000000000
2007-01-01	105.75900000000000
2008-01-01	106.65799999999999
2009-01-01	117.64200000000001
2010-01-01	125.55100000000000
2011-01-01	125.95000000000000
2012-01-01	129.63299999999998
2013-01-01	135.10399999999998
2014-01-01	141.89500000000000
2015-01-01	152.88500000000000
2016-01-01	168.00799999999998