Year	Percent
1990-01-01	0.7100750000000000
1991-01-01	0.6974199999999999
1992-01-01	0.8044070000000000
1993-01-01	0.8622090000000000
1994-01-01	0.8910959999999999
1995-01-01	0.8679549999999999
1996-01-01	0.8366990000000000
1997-01-01	0.7165870000000000
1998-01-01	0.7046720000000001
1999-01-01	0.7556560000000000
2000-01-01	0.8123859999999999
2001-01-01	1.1105000000000000
2002-01-01	1.2485100000000000
2003-01-01	1.2552299999999998
2004-01-01	1.1978500000000000
2005-01-01	1.1085300000000000
2006-01-01	1.1360700000000001
2007-01-01	1.1500200000000000
2008-01-01	1.5477600000000000
2009-01-01	1.0996100000000000
2010-01-01	1.0795000000000000
2011-01-01	1.0202700000000000
2012-01-01	0.9977070000000000
2013-01-01	1.0533000000000000
2014-01-01	1.0028299999999999
2015-01-01	1.0394900000000000