Year	Percent
1996-01-01	89.823200000000000
1997-01-01	87.229000000000000
1998-01-01	90.236100000000000
1999-01-01	97.752900000000000
2000-01-01	97.752900000000000
2001-01-01	97.752900000000000
2002-01-01	97.752900000000000
2003-01-01	97.752900000000000
2004-01-01	60.203999999999990
2005-01-01	58.626000000000005
2006-01-01	57.141400000000000
2007-01-01	64.796800000000000
2008-01-01	65.064100000000000
2009-01-01	64.430900000000000
2010-01-01	64.941900000000000
2011-01-01	56.373100000000000
2012-01-01	56.475700000000000
2013-01-01	60.335900000000000
2014-01-01	62.489900000000000
2015-01-01	64.281900000000000
2016-01-01	61.696999999999996