Year	Percent
2005-01-01	7.175
2006-01-01	7.075
2007-01-01	7.075
2008-01-01	7.100
2009-01-01	7.500
2010-01-01	7.650
2011-01-01	7.825
2012-01-01	7.825
2013-01-01	8.175
2014-01-01	8.475
2015-01-01	8.575
2016-01-01	8.625
2017-01-01	8.625