Year	Percent
1990-01-01	153.19100000000000
1991-01-01	140.18000000000000
1992-01-01	124.75600000000000
1993-01-01	123.99200000000000
1994-01-01	131.41899999999998
1995-01-01	143.14800000000000
1996-01-01	146.39400000000000
1997-01-01	155.30800000000000
1998-01-01	174.63700000000000
1999-01-01	161.52400000000000
2000-01-01	148.04600000000000
2001-01-01	151.83000000000000
2002-01-01	149.12700000000000
2003-01-01	147.36000000000000
2004-01-01	141.78700000000000
2005-01-01	138.82500000000000
2006-01-01	135.73200000000000
2007-01-01	129.33400000000000
2008-01-01	136.70100000000000
2009-01-01	148.57500000000000
2010-01-01	163.84700000000000
2011-01-01	186.32400000000000
2012-01-01	194.40099999999998
2013-01-01	203.10500000000000
2014-01-01	218.94299999999998
2015-01-01	212.08200000000000
2016-01-01	201.59500000000000