Year	Percent
1996-01-01	46.6438
1997-01-01	53.5954
1998-01-01	65.9323
1999-01-01	66.6585
2000-01-01	67.8216
2001-01-01	78.7262
2002-01-01	82.2836
2003-01-01	90.4145
2004-01-01	91.5746
2005-01-01	94.1752
2006-01-01	90.3595
2007-01-01	88.7441
2008-01-01	92.9304
2009-01-01	95.7479
2010-01-01	84.8066
2011-01-01	82.1726
2012-01-01	82.1031
2013-01-01	82.4207
2014-01-01	83.5070
2015-01-01	82.9636
2016-01-01	83.3659