Year	Percent
1996-01-01	79.09520000000000
1997-01-01	94.68740000000000
1998-01-01	81.55470000000000
1999-01-01	78.56450000000000
2000-01-01	57.94910000000000
2001-01-01	60.75210000000000
2002-01-01	63.16940000000000
2003-01-01	68.49270000000000
2004-01-01	67.72150000000000
2005-01-01	67.80199999999999
2006-01-01	66.92810000000000
2007-01-01	67.51190000000000
2008-01-01	74.22050000000000
2009-01-01	71.97800000000001
2010-01-01	74.33670000000000
2011-01-01	64.96290000000000
2012-01-01	65.13200000000000
2013-01-01	65.60170000000000
2014-01-01	72.03790000000000
2015-01-01	76.21920000000000
2016-01-01	75.60130000000000