Year	Percent
1996-01-01	75.2254
1997-01-01	73.8539
1998-01-01	72.5623
1999-01-01	67.2921
2000-01-01	68.7221
2001-01-01	77.3729
2002-01-01	76.7120
2003-01-01	85.8863
2004-01-01	82.8763
2005-01-01	89.0526
2006-01-01	90.4519
2007-01-01	85.9515
2008-01-01	87.1968
2009-01-01	86.1002
2010-01-01	83.1055
2011-01-01	80.3455
2012-01-01	79.0029
2013-01-01	79.4062
2014-01-01	83.8886
2015-01-01	84.9931
2016-01-01	84.5182