Year	Percent
1995-01-01	65.0419481175000
1996-01-01	64.1848459200000
1997-01-01	63.0881467875000
1998-01-01	61.8530968325000
1999-01-01	61.2590518450000
2000-01-01	61.3508579800000
2001-01-01	60.8201443675000
2002-01-01	59.5087360375000
2003-01-01	59.4238534125000
2004-01-01	60.3701641325000
2005-01-01	60.9725304850000
2006-01-01	61.8379611150000
2007-01-01	63.3117939775000
2008-01-01	64.0846290525000
2009-01-01	62.5485218150000
2010-01-01	63.4321827000000
2011-01-01	64.3362719050000
2012-01-01	70.7000000000000
2013-01-01	71.2083333333334
2014-01-01	71.5250000000000
2015-01-01	72.1416666666667
2016-01-01	72.0250000000000
2017-01-01	72.4416666666667