Year	Percent
1996-01-01	80.3352
1997-01-01	75.4091
1998-01-01	85.5207
1999-01-01	98.9125
2000-01-01	99.3854
2001-01-01	78.5852
2002-01-01	82.9367
2003-01-01	72.1594
2004-01-01	67.3616
2005-01-01	62.8534
2006-01-01	64.0863
2007-01-01	61.4537
2008-01-01	63.4038
2009-01-01	64.2011
2010-01-01	58.9914
2011-01-01	63.6522
2012-01-01	57.4501
2013-01-01	58.6824
2014-01-01	53.3712