Year	Percent
1995-01-01	46.71
1996-01-01	51.99
1997-01-01	58.76
1998-01-01	65.35
1999-01-01	78.63
2000-01-01	77.16
2001-01-01	73.53
2002-01-01	65.23
2003-01-01	70.00
2004-01-01	70.81
2005-01-01	80.25
2006-01-01	81.46
2007-01-01	79.70
2008-01-01	72.01
2009-01-01	87.36
2010-01-01	85.57
2011-01-01	81.70
2012-01-01	86.84
2013-01-01	93.59
2014-01-01	101.56
2015-01-01	97.42