Year	Percent
1995-01-01	5.67718824600000
1996-01-01	5.92457001200000
1997-01-01	6.92693471625000
1998-01-01	8.13935882475000
1999-01-01	8.64045541750000
2000-01-01	8.54292292875000
2001-01-01	9.08621515250000
2002-01-01	10.26495382825000
2003-01-01	10.40211970825000
2004-01-01	9.64911518525000
2005-01-01	8.71053458150000
2006-01-01	8.02549252275000
2007-01-01	6.86065050350000
2008-01-01	5.83249257400000
2009-01-01	7.70410398325000
2010-01-01	6.92301218700000
2011-01-01	5.72562370425000
2012-01-01	6.85000000000000
2013-01-01	6.28333333333333
2014-01-01	5.96666666666667
2015-01-01	5.22500000000000
2016-01-01	4.78333333333333
2017-01-01	4.20000000000000