Year	Percent
1991-01-01	0.33737300000000000
1992-01-01	0.33381000000000000
1993-01-01	0.39902200000000000
1994-01-01	0.42881800000000003
1995-01-01	0.41570200000000000
1996-01-01	0.39035000000000000
1997-01-01	0.37896199999999997
1998-01-01	0.42127900000000000
1999-01-01	0.34016599999999997
2000-01-01	0.19777999999999998
2001-01-01	0.26402000000000000
2002-01-01	0.32673400000000000
2003-01-01	0.35227200000000000
2004-01-01	0.35227200000000000
2005-01-01	0.29167800000000000
2006-01-01	0.31859100000000000
2007-01-01	0.33299500000000000
2008-01-01	0.28318800000000000
2009-01-01	0.39245800000000000
2010-01-01	0.34041800000000000
2011-01-01	0.31426600000000000
2012-01-01	0.32699100000000000
2013-01-01	0.41200100000000000
2014-01-01	0.49020400000000000
2015-01-01	0.68084800000000000
2016-01-01	0.71597100000000000