Year	Percent
1997-01-01	0.74725900000000000
1998-01-01	0.42083400000000004
1999-01-01	0.42083400000000004
2000-01-01	0.42083400000000004
2001-01-01	0.87288400000000000
2002-01-01	0.87824599999999990
2003-01-01	0.85094699999999990
2004-01-01	0.38375600000000000
2005-01-01	0.38283800000000000
2006-01-01	0.32465900000000003
2007-01-01	0.32618600000000003
2008-01-01	0.28659100000000000
2009-01-01	0.39102900000000000
2010-01-01	0.44023599999999996
2011-01-01	0.33288800000000000
2012-01-01	0.29734499999999997
2013-01-01	0.31809299999999996
2014-01-01	0.34019299999999997
2015-01-01	0.44428700000000000
2016-01-01	0.47286100000000000