Year	Percent
1991-01-01	0.057263000000000000
1992-01-01	0.038414000000000000
1993-01-01	0.029994999999999997
1994-01-01	0.030287000000000000
1995-01-01	0.023627000000000002
1996-01-01	0.023774000000000000
1997-01-01	0.022394999999999998
1998-01-01	0.025232000000000000
1999-01-01	0.020805000000000000
2000-01-01	0.019604000000000000
2001-01-01	0.022379000000000000
2002-01-01	0.029093000000000000
2003-01-01	0.031971000000000000
2004-01-01	0.033781000000000000
2005-01-01	0.033861000000000000
2006-01-01	0.034888999999999996
2007-01-01	0.035866000000000000
2008-01-01	0.032708000000000000
2009-01-01	0.029813000000000000
2010-01-01	0.029952999999999997
2011-01-01	0.031169000000000000
2012-01-01	0.036342000000000000
2013-01-01	0.034638999999999996
2014-01-01	0.026155000000000000
2015-01-01	0.024178000000000000
2016-01-01	0.022028000000000000