Year	Percent
1991-01-01	0.76472100000000000
1992-01-01	0.71361500000000000
1993-01-01	0.83777400000000000
1994-01-01	0.82167600000000010
1995-01-01	0.83472600000000000
1996-01-01	0.70619600000000000
1997-01-01	0.60857400000000000
1998-01-01	0.55592800000000000
1999-01-01	0.58039200000000000
2000-01-01	0.49171600000000000
2001-01-01	0.61335000000000000
2002-01-01	0.54635700000000000
2003-01-01	0.51186300000000000
2004-01-01	0.43906000000000006
2005-01-01	0.46275900000000003
2006-01-01	0.43945100000000004
2007-01-01	0.43134799999999995
2008-01-01	0.52053500000000010
2009-01-01	0.61759300000000010
2010-01-01	0.28364600000000000
2011-01-01	0.25912900000000000
2012-01-01	0.25176000000000000
2013-01-01	0.22402800000000003
2014-01-01	0.20400800000000000
2015-01-01	0.19606200000000000