Year	Percent
2006-01-01	12.750
2007-01-01	12.725
2008-01-01	12.500
2009-01-01	12.375
2010-01-01	11.475
2011-01-01	10.825
2012-01-01	11.225
2013-01-01	10.600
2014-01-01	10.200
2015-01-01	9.500
2016-01-01	9.175
2017-01-01	8.850