Year	Percent
1990-01-01	0.54687500000000000
1991-01-01	0.60767600000000000
1992-01-01	0.51679900000000000
1993-01-01	0.60643100000000000
1994-01-01	0.71383400000000000
1995-01-01	0.69721199999999990
1996-01-01	0.67501000000000000
1997-01-01	0.65774300000000010
1998-01-01	0.56693100000000010
1999-01-01	0.52781000000000000
2000-01-01	0.47143199999999996
2001-01-01	0.41989499999999996
2002-01-01	0.44190000000000000
2003-01-01	0.50878600000000000
2004-01-01	0.53306600000000000
2005-01-01	0.56979499999999990
2006-01-01	0.58676100000000000
2007-01-01	0.64871600000000000
2008-01-01	0.66376700000000000
2009-01-01	0.64872200000000000
2010-01-01	0.65241100000000000
2011-01-01	0.67374100000000000
2012-01-01	0.67086400000000000
2013-01-01	0.63747300000000000
2014-01-01	0.49960100000000000
2015-01-01	0.49232400000000000