Year	Percent
1992-01-01	0.62988000000000000
1993-01-01	0.64725200000000000
1994-01-01	0.65969300000000000
1995-01-01	0.60127700000000010
1996-01-01	0.54292700000000000
1997-01-01	0.57801700000000000
1998-01-01	0.64855800000000000
1999-01-01	0.53468600000000000
2000-01-01	0.46197100000000000
2001-01-01	0.55936400000000010
2002-01-01	0.61291500000000000
2003-01-01	0.56347100000000000
2004-01-01	0.52660600000000000
2005-01-01	0.44273000000000000
2006-01-01	0.39977399999999996
2007-01-01	0.38356799999999996
2008-01-01	0.34019000000000000
2009-01-01	0.40591300000000000
2010-01-01	0.34648000000000000
2011-01-01	0.28243600000000000
2012-01-01	0.26919499999999996
2013-01-01	0.26080200000000000
2014-01-01	0.28581599999999996
2015-01-01	0.38572700000000000