Year	Percent
1990-01-01	99.61140000000000
1991-01-01	98.11330000000000
1992-01-01	91.77290000000000
1993-01-01	95.37110000000000
1994-01-01	98.42610000000000
1995-01-01	94.37060000000000
1996-01-01	90.25070000000000
1997-01-01	88.90100000000001
1998-01-01	96.63700000000000
1999-01-01	92.49650000000000
2000-01-01	100.15500000000000
2001-01-01	110.42800000000000
2002-01-01	134.55900000000000
2003-01-01	143.56100000000000
2004-01-01	152.90600000000000
2005-01-01	141.53900000000000
2006-01-01	152.52200000000002
2007-01-01	165.03400000000002
2008-01-01	151.37600000000000
2009-01-01	197.14600000000000
2010-01-01	184.51700000000000
2011-01-01	167.16400000000002
2012-01-01	182.88400000000001
2013-01-01	171.32400000000000
2014-01-01	149.87800000000000
2015-01-01	150.19200000000000
2016-01-01	147.14100000000000