Year	Percent
1990-01-01	0.08596600000000000
1991-01-01	0.08225299999999999
1992-01-01	0.09586000000000000
1993-01-01	0.11140800000000000
1994-01-01	0.12605900000000000
1995-01-01	0.14696600000000000
1996-01-01	0.18552100000000000
1997-01-01	0.21778300000000000
1998-01-01	0.24767700000000000
1999-01-01	0.25655700000000004
2000-01-01	0.28557500000000000
2001-01-01	0.33128000000000000
2002-01-01	0.36845200000000000
2003-01-01	0.41680800000000000
2004-01-01	0.45458500000000000
2005-01-01	0.49663300000000000
2006-01-01	0.55621100000000000
2007-01-01	0.57860900000000000
2008-01-01	0.62118800000000000
2009-01-01	0.65181899999999990
2010-01-01	0.73411600000000000
2011-01-01	0.68587500000000000
2012-01-01	0.61788300000000000
2013-01-01	0.55116300000000000
2014-01-01	0.52675900000000000
2015-01-01	0.48360400000000000