Year	Percent
1996-01-01	84.1650
1997-01-01	51.2382
1998-01-01	48.8953
1999-01-01	55.7009
2000-01-01	62.9067
2001-01-01	73.6188
2002-01-01	73.5728
2003-01-01	73.9942
2004-01-01	69.7629
2005-01-01	64.6937
2006-01-01	59.6546
2007-01-01	69.5705
2008-01-01	69.1525
2009-01-01	72.2525
2010-01-01	84.7249
2011-01-01	91.1226
2012-01-01	93.4279
2013-01-01	98.9982
2014-01-01	100.0000
2015-01-01	100.0000
2016-01-01	100.0000