Year	Percent
1991-01-01	0.26763700000000000
1992-01-01	0.21971800000000000
1993-01-01	0.22077399999999997
1994-01-01	0.21565600000000000
1995-01-01	0.25168000000000000
1996-01-01	0.41101499999999996
1997-01-01	0.40328000000000000
1998-01-01	0.37729400000000000
1999-01-01	0.36051700000000003
2000-01-01	0.37194400000000000
2001-01-01	0.41809700000000005
2002-01-01	0.45767800000000000
2003-01-01	0.48121300000000000
2004-01-01	0.54235200000000010
2005-01-01	0.53046000000000000
2006-01-01	0.44697000000000000
2007-01-01	0.50457000000000000
2008-01-01	0.56485600000000000
2009-01-01	0.54666300000000000
2010-01-01	0.55991499999999990
2011-01-01	0.60651499999999990
2012-01-01	0.56468999999999990
2013-01-01	0.50812400000000000
2014-01-01	0.42178000000000004
2015-01-01	0.53754099999999990
2016-01-01	0.49786600000000000