Year	Percent
1992-01-01	0.21713700000000000
1993-01-01	0.21456100000000000
1994-01-01	0.19381099999999998
1995-01-01	0.19098299999999999
1996-01-01	0.15879200000000002
1997-01-01	0.14074500000000000
1998-01-01	0.15761400000000000
1999-01-01	0.17182000000000000
2000-01-01	0.16097100000000000
2001-01-01	0.15664700000000000
2002-01-01	0.15312800000000000
2003-01-01	0.16657200000000000
2004-01-01	0.18915600000000000
2005-01-01	0.19496000000000000
2006-01-01	0.20972000000000000
2007-01-01	0.23140700000000003
2008-01-01	0.24148699999999998
2009-01-01	0.25529000000000000
2010-01-01	0.26225000000000000
2011-01-01	0.27765000000000000
2012-01-01	0.29295100000000000
2013-01-01	0.27838000000000000
2014-01-01	0.27565600000000000
2015-01-01	0.30190800000000000