Year	Percent
1999-01-01	0.08700000000000000
2000-01-01	0.10200000000000000
2001-01-01	0.10549900000000000
2002-01-01	0.10918399999999999
2003-01-01	0.12292900000000000
2004-01-01	0.14591200000000000
2005-01-01	0.15633300000000000
2006-01-01	0.16470900000000000
2007-01-01	0.25563900000000000
2008-01-01	0.22736900000000002
2009-01-01	0.22427500000000000
2010-01-01	0.27962300000000000
2011-01-01	0.24645100000000003
2012-01-01	0.24674800000000000
2013-01-01	0.25550600000000000
2014-01-01	0.27594400000000000
2015-01-01	0.27346200000000000