Year	Percent
1996-01-01	79.0029
1997-01-01	80.0909
1998-01-01	83.9599
1999-01-01	78.4687
2000-01-01	83.0901
2001-01-01	80.6227
2002-01-01	83.6566
2003-01-01	75.0129
2004-01-01	72.8430
2005-01-01	73.0942
2006-01-01	68.9901
2007-01-01	70.4166
2008-01-01	63.3642
2009-01-01	63.0124
2010-01-01	61.8797
2011-01-01	61.0469
2012-01-01	62.8593
2013-01-01	62.0939
2014-01-01	61.4708