Year	Percent
1990-01-01	0.28848100000000000
1991-01-01	0.48767400000000000
1992-01-01	0.55860700000000000
1993-01-01	0.57210900000000000
1994-01-01	0.52687100000000000
1995-01-01	0.52480600000000000
1996-01-01	0.45851700000000000
1997-01-01	0.49018100000000003
1998-01-01	0.48657900000000000
1999-01-01	0.44919600000000000
2000-01-01	0.41559900000000000
2001-01-01	0.46551600000000000
2002-01-01	0.49678500000000003
2003-01-01	0.48228300000000000
2004-01-01	0.48911099999999996
2005-01-01	0.48911099999999996
2006-01-01	0.42008800000000000
2007-01-01	0.43195100000000003
2008-01-01	0.47777900000000000
2009-01-01	0.52060200000000000
2010-01-01	0.54419400000000000
2011-01-01	0.46906700000000000
2012-01-01	0.31926400000000000
2013-01-01	0.19346200000000000
2014-01-01	0.18764300000000000
2015-01-01	0.13635700000000000