Year	Percent
2000-01-01	0.068151
2001-01-01	0.096432
2002-01-01	0.108178
2003-01-01	0.196652
2004-01-01	0.226662
2005-01-01	0.320000
2006-01-01	0.550000
2007-01-01	0.550000
2008-01-01	0.140000
2009-01-01	0.240000
2010-01-01	0.260000
2011-01-01	0.180000
2012-01-01	0.160000
2013-01-01	0.190000
2014-01-01	0.140000
2015-01-01	0.170000
2016-01-01	0.180000