Year	Percent
1996-01-01	82.7183
1997-01-01	79.2683
1998-01-01	60.3947
1999-01-01	60.1839
2000-01-01	61.2846
2001-01-01	70.1967
2002-01-01	70.8177
2003-01-01	79.0075
2004-01-01	72.1807
2005-01-01	75.3653
2006-01-01	66.7880
2007-01-01	65.5573
2008-01-01	63.0248
2009-01-01	46.3214
2010-01-01	49.3458
2011-01-01	65.0583
2012-01-01	55.8668
2013-01-01	56.1323
2014-01-01	56.5542