Year	Percent
2000-01-01	9.400
2001-01-01	9.300
2002-01-01	10.175
2003-01-01	10.700
2004-01-01	11.375
2005-01-01	10.775
2006-01-01	8.475
2007-01-01	6.825
2008-01-01	5.325
2009-01-01	6.275
2010-01-01	7.150
2011-01-01	6.925
2012-01-01	7.450
2013-01-01	7.750
2014-01-01	6.825
2015-01-01	5.475
2016-01-01	4.425
2017-01-01	3.700