Year	Percent
1995-01-01	14.0496252700000
1996-01-01	14.8309093325000
1997-01-01	15.2543659975000
1998-01-01	15.5175899175000
1999-01-01	15.9898209725000
2000-01-01	15.9788681975000
2001-01-01	16.5170466300000
2002-01-01	16.8732829250000
2003-01-01	16.7733043850000
2004-01-01	16.8226466850000
2005-01-01	17.3062360600000
2006-01-01	17.0284659475000
2007-01-01	16.2754950375000
2008-01-01	16.0640805425000
2009-01-01	16.6773371225000
2010-01-01	16.2380319050000
2011-01-01	16.2301565975000
2012-01-01	13.1333333333333
2013-01-01	13.4916666666667
2014-01-01	13.1833333333333
2015-01-01	12.7166666666667
2016-01-01	13.0750000000000
2017-01-01	13.0333333333333