Year	Percent
2006-01-01	9.400
2007-01-01	9.400
2008-01-01	10.250
2009-01-01	12.950
2010-01-01	11.675
2011-01-01	10.325
2012-01-01	9.625
2013-01-01	10.800
2014-01-01	12.075
2015-01-01	12.875
2016-01-01	13.900
2017-01-01	14.175