Year	Percent
1996-01-01	100.000000000000000
1997-01-01	84.605500000000000
1998-01-01	82.201400000000000
1999-01-01	74.097100000000000
2000-01-01	70.668200000000000
2001-01-01	75.575900000000000
2002-01-01	71.626500000000000
2003-01-01	62.793200000000000
2004-01-01	60.633700000000000
2005-01-01	53.916500000000000
2006-01-01	57.599400000000000
2007-01-01	59.916400000000000
2008-01-01	61.767500000000000
2009-01-01	63.675700000000000
2010-01-01	62.106400000000000
2011-01-01	59.781600000000000
2012-01-01	58.815700000000000
2013-01-01	59.858200000000000
2014-01-01	61.516999999999996
2015-01-01	57.969800000000000
2016-01-01	74.853600000000000