Year	Percent
1996-01-01	63.875400000000000
1997-01-01	72.785800000000000
1998-01-01	57.525000000000000
1999-01-01	65.166600000000000
2000-01-01	64.459600000000000
2001-01-01	61.241900000000000
2002-01-01	75.143800000000000
2003-01-01	63.139500000000000
2004-01-01	64.478600000000000
2005-01-01	59.483500000000000
2006-01-01	50.668700000000000
2007-01-01	51.794100000000000
2008-01-01	49.212200000000000
2009-01-01	39.260999999999996
2010-01-01	65.511500000000000
2011-01-01	60.079100000000000
2012-01-01	59.330000000000000
2013-01-01	60.402700000000000
2014-01-01	60.633600000000000