Year	Percent
1995-01-01	16.93238939000000
1996-01-01	14.96458740000000
1997-01-01	15.94928597250000
1998-01-01	17.50660622000000
1999-01-01	17.24534089500000
2000-01-01	16.66617854250000
2001-01-01	18.78362223000000
2002-01-01	20.66927216500000
2003-01-01	22.09631002750000
2004-01-01	21.13894338500000
2005-01-01	18.58666749000000
2006-01-01	19.07950575250000
2007-01-01	16.98511060250000
2008-01-01	13.32955062750000
2009-01-01	13.55063903250000
2010-01-01	12.82491997475000
2011-01-01	11.37484644125000
2012-01-01	12.64166666666670
2013-01-01	10.63333333333330
2014-01-01	11.04166666666670
2015-01-01	9.66666666666667
2016-01-01	9.05000000000000
2017-01-01	7.80833333333333