Year	Percent
1996-01-01	27.1768
1997-01-01	27.6603
1998-01-01	51.7936
1999-01-01	51.9802
2000-01-01	58.9736
2001-01-01	55.4171
2002-01-01	54.1149
2003-01-01	54.5357
2004-01-01	61.7727
2005-01-01	60.6252
2006-01-01	70.1741
2007-01-01	66.4532
2008-01-01	61.1454
2009-01-01	83.7674
2010-01-01	86.5276
2011-01-01	86.0841
2012-01-01	94.3174
2013-01-01	74.8104
2014-01-01	70.1974