Year	Percent
1996-01-01	40.772400000000000
1997-01-01	54.950400000000000
1998-01-01	56.921300000000000
1999-01-01	63.145500000000000
2000-01-01	60.275700000000000
2001-01-01	64.512400000000000
2002-01-01	60.902300000000000
2003-01-01	63.581500000000000
2004-01-01	61.821300000000000
2005-01-01	62.194800000000000
2006-01-01	54.139100000000000
2007-01-01	55.365700000000000
2008-01-01	46.553200000000000
2009-01-01	52.996200000000000
2010-01-01	55.685700000000000
2011-01-01	57.160600000000000
2012-01-01	59.726800000000000
2013-01-01	54.726400000000000
2014-01-01	54.666000000000004
2015-01-01	47.543300000000000
2016-01-01	62.369200000000000