Year	Percent
1990-01-01	0.16531500000000002
1991-01-01	0.24098100000000000
1992-01-01	0.28914500000000000
1993-01-01	0.25328600000000000
1994-01-01	0.15557600000000000
1995-01-01	0.15975300000000000
1996-01-01	0.14179800000000000
1997-01-01	0.14166199999999998
1998-01-01	0.16691900000000000
1999-01-01	0.18748800000000002
2000-01-01	0.11267100000000001
2001-01-01	0.16529300000000000
2002-01-01	0.15471500000000002
2003-01-01	0.15924100000000002
2004-01-01	0.14905000000000000
2005-01-01	0.12866600000000000
2006-01-01	0.15049900000000000
2007-01-01	0.16274300000000000
2008-01-01	0.15616300000000002
2009-01-01	0.21099000000000000
2010-01-01	0.17313699999999999
2011-01-01	0.17666700000000002
2012-01-01	0.17338199999999998
2013-01-01	0.20143000000000000
2014-01-01	0.19660000000000000
2015-01-01	0.20048200000000000