Year	Percent
2005-01-01	8.375
2006-01-01	7.650
2007-01-01	6.675
2008-01-01	6.650
2009-01-01	9.075
2010-01-01	9.700
2011-01-01	9.675
2012-01-01	10.525
2013-01-01	11.000
2014-01-01	10.300
2015-01-01	9.450
2016-01-01	8.550
2017-01-01	7.575