Year	Percent
1991-01-01	0.25255300000000000
1992-01-01	0.23718400000000000
1993-01-01	0.23568200000000000
1994-01-01	0.26457300000000000
1995-01-01	0.30209700000000000
1996-01-01	0.35211400000000000
1997-01-01	0.32115800000000000
1998-01-01	0.35658400000000000
1999-01-01	0.34096100000000000
2000-01-01	0.35238900000000000
2001-01-01	0.34833400000000003
2002-01-01	0.46867400000000000
2003-01-01	0.46050200000000000
2004-01-01	0.43607200000000000
2005-01-01	0.45684500000000000
2006-01-01	0.43647800000000000
2007-01-01	0.45187500000000000
2008-01-01	0.47228600000000000
2009-01-01	0.44725299999999996
2010-01-01	0.54469200000000000
2011-01-01	0.52459899999999990
2012-01-01	0.51240700000000000
2013-01-01	0.53104700000000000
2014-01-01	0.55512100000000000
2015-01-01	0.53636400000000010
2016-01-01	0.62791800000000000