Year	Percent
1996-01-01	78.5714
1997-01-01	78.5185
1998-01-01	75.5486
1999-01-01	78.1250
2000-01-01	72.2749
2001-01-01	83.2230
2002-01-01	75.9009
2003-01-01	75.5304
2004-01-01	76.8448
2005-01-01	64.5012
2006-01-01	61.0365
2007-01-01	57.8237
2008-01-01	48.4398
2009-01-01	83.6707
2010-01-01	59.9588
2011-01-01	68.5346
2012-01-01	65.6126
2013-01-01	63.0986
2014-01-01	64.9362