Year	Percent
2005-01-01	8.025
2006-01-01	7.350
2007-01-01	6.625
2008-01-01	6.675
2009-01-01	8.650
2010-01-01	9.275
2011-01-01	9.350
2012-01-01	10.600
2013-01-01	11.250
2014-01-01	11.000
2015-01-01	10.275
2016-01-01	9.475
2017-01-01	8.600