Year	Percent
1996-01-01	98.5364
1997-01-01	97.0610
1998-01-01	96.3211
1999-01-01	90.3243
2000-01-01	90.5105
2001-01-01	90.7491
2002-01-01	94.6619
2003-01-01	89.5957
2004-01-01	90.6036
2005-01-01	82.4604
2006-01-01	78.3784
2007-01-01	83.9158
2008-01-01	86.6030
2009-01-01	88.5088
2010-01-01	96.0642
2011-01-01	84.2875
2012-01-01	82.0146
2013-01-01	76.2794
2014-01-01	84.2712
2015-01-01	69.6615
2016-01-01	69.1615