Year	Percent
2003-01-01	7.225
2004-01-01	7.450
2005-01-01	7.475
2006-01-01	7.225
2007-01-01	6.650
2008-01-01	6.025
2009-01-01	7.325
2010-01-01	7.575
2011-01-01	7.675
2012-01-01	8.250
2013-01-01	8.750
2014-01-01	9.175
2015-01-01	9.275
2016-01-01	8.925
2017-01-01	8.475