Year	Percent
1990-01-01	0.40599200000000000
1991-01-01	0.37860800000000000
1992-01-01	0.43889700000000004
1993-01-01	0.46636900000000000
1994-01-01	0.44908900000000000
1995-01-01	0.44670299999999996
1996-01-01	0.44206999999999996
1997-01-01	0.51353600000000000
1998-01-01	0.66570500000000000
1999-01-01	0.57635900000000010
2000-01-01	0.48139499999999996
2001-01-01	0.45637200000000000
2002-01-01	0.49196999999999996
2003-01-01	0.54847500000000000
2004-01-01	0.55714500000000000
2005-01-01	0.59168000000000000
2006-01-01	0.61267900000000000
2007-01-01	0.61334900000000000
2008-01-01	0.61967200000000000
2009-01-01	0.59989600000000000
2010-01-01	0.58624600000000000
2011-01-01	0.57373699999999990
2012-01-01	0.69843100000000000
2013-01-01	0.62321100000000000
2014-01-01	0.58543000000000000