Year	Percent
1995-01-01	2.4268800000000000
1996-01-01	2.5593400000000000
1997-01-01	2.7060700000000000
1998-01-01	3.7694400000000003
1999-01-01	5.6035500000000000
2000-01-01	8.0303000000000000
2001-01-01	9.3848500000000000
2002-01-01	11.2717000000000000
2003-01-01	11.8581000000000000
2004-01-01	8.6117900000000000
2005-01-01	5.6823300000000000
2006-01-01	4.1747700000000000
2007-01-01	3.1150000000000000
2008-01-01	2.6383600000000000
2009-01-01	3.1477800000000000
2010-01-01	3.2517400000000003
2011-01-01	2.0430500000000000
2012-01-01	1.8443500000000000
2013-01-01	1.7536599999999998