Year	Percent
1987-01-01	8.557780000000001
1988-01-01	9.031820000000000
1989-01-01	10.440600000000000
1990-01-01	11.399100000000000
1991-01-01	13.771100000000000
1992-01-01	14.876600000000000
1993-01-01	12.074500000000000
1994-01-01	15.347600000000000
1995-01-01	15.857800000000000
1996-01-01	20.372500000000000
1997-01-01	27.153300000000000
1998-01-01	35.977900000000000
1999-01-01	41.200000000000000
2000-01-01	59.007800000000000
2001-01-01	67.061500000000000
2002-01-01	81.413300000000000
2003-01-01	91.630500000000000
2004-01-01	96.107600000000000
2005-01-01	97.259900000000000
2006-01-01	117.452000000000010
2007-01-01	120.205000000000000
2008-01-01	110.914000000000000
2009-01-01	141.231000000000000
2010-01-01	151.757000000000000
2011-01-01	149.412999999999980
2012-01-01	166.107000000000000
2013-01-01	162.197999999999980
2014-01-01	147.692000000000000
2015-01-01	157.316000000000000
2016-01-01	147.232000000000000