Year	Percent
1990-01-01	0.63736900000000000
1991-01-01	0.64356099999999990
1992-01-01	0.59320699999999990
1993-01-01	0.59037100000000000
1994-01-01	0.54887800000000000
1995-01-01	0.53959300000000000
1996-01-01	0.45607600000000004
1997-01-01	0.48029300000000000
1998-01-01	0.45297000000000000
1999-01-01	0.44473400000000000
2000-01-01	0.54749500000000000
2001-01-01	0.51925600000000000
2002-01-01	0.54215300000000000
2003-01-01	0.55882400000000000
2004-01-01	0.56210799999999990
2005-01-01	0.51284300000000000
2006-01-01	0.52654100000000000
2007-01-01	0.53303100000000000
2008-01-01	0.49835300000000000
2009-01-01	0.46924899999999997
2010-01-01	0.46827500000000000
2011-01-01	0.46226000000000006
2012-01-01	0.38760900000000004
2013-01-01	0.39116400000000000
2014-01-01	0.45861199999999996
2015-01-01	0.46779899999999996