Year	Percent
2005-01-01	9.025
2006-01-01	8.275
2007-01-01	7.250
2008-01-01	7.050
2009-01-01	9.025
2010-01-01	9.675
2011-01-01	9.775
2012-01-01	10.575
2013-01-01	11.025
2014-01-01	10.375
2015-01-01	9.550
2016-01-01	8.700
2017-01-01	7.750