Year	Percent
1999-01-01	0.04427400000000000
2000-01-01	0.03763900000000000
2001-01-01	0.03681100000000000
2002-01-01	0.03681100000000000
2003-01-01	0.03681100000000000
2004-01-01	0.03681100000000000
2005-01-01	0.03681100000000000
2006-01-01	0.03681100000000000
2007-01-01	0.03681100000000000
2008-01-01	0.35653300000000000
2009-01-01	0.33823300000000000
2010-01-01	0.32542400000000000
2011-01-01	0.28944699999999995
2012-01-01	0.25684500000000000
2013-01-01	0.24650600000000000
2014-01-01	0.27780900000000003
2015-01-01	0.26957900000000000
2016-01-01	0.26491500000000000