Year	Percent
1993-01-01	10.000
1994-01-01	10.650
1995-01-01	10.425
1996-01-01	10.625
1997-01-01	10.550
1998-01-01	10.075
1999-01-01	9.325
2000-01-01	8.450
2001-01-01	8.000
2002-01-01	8.400
2003-01-01	8.850
2004-01-01	9.075
2005-01-01	8.950
2006-01-01	8.250
2007-01-01	7.425
2008-01-01	7.475
2009-01-01	9.500
2010-01-01	10.100
2011-01-01	10.150
2012-01-01	11.350
2013-01-01	11.950
2014-01-01	11.650
2015-01-01	10.875
2016-01-01	10.025
2017-01-01	9.075