Year	Percent
1996-01-01	77.2727
1997-01-01	77.4193
1998-01-01	80.0000
1999-01-01	86.2069
2000-01-01	75.4111
2001-01-01	73.1963
2002-01-01	73.4423
2003-01-01	70.2424
2004-01-01	70.3596
2005-01-01	67.4063
2006-01-01	64.5741
2007-01-01	68.8569
2008-01-01	65.3949
2009-01-01	69.5269
2010-01-01	69.3010
2011-01-01	66.1143
2012-01-01	64.2873
2013-01-01	69.5082
2014-01-01	66.7448