Year	Percent
1990-01-01	0.60937100000000000
1991-01-01	0.57339400000000000
1992-01-01	0.56815799999999990
1993-01-01	0.58779200000000000
1994-01-01	0.67052800000000000
1995-01-01	0.69710100000000000
1996-01-01	0.64439000000000000
1997-01-01	0.61068700000000000
1998-01-01	0.66605700000000000
1999-01-01	0.55415900000000010
2000-01-01	0.49993600000000000
2001-01-01	0.59979300000000000
2002-01-01	0.64771300000000000
2003-01-01	0.61605600000000000
2004-01-01	0.60067299999999990
2005-01-01	0.55735400000000000
2006-01-01	0.48964700000000000
2007-01-01	0.45483000000000000
2008-01-01	0.43873900000000005
2009-01-01	0.41059300000000004
2010-01-01	0.36290200000000000
2011-01-01	0.36817500000000000
2012-01-01	0.37085200000000000
2013-01-01	0.39770600000000000
2014-01-01	0.43060000000000000
2015-01-01	0.43435600000000000
2016-01-01	0.42927299999999996