Year	Percent
2005-01-01	9.175
2006-01-01	8.500
2007-01-01	7.650
2008-01-01	7.525
2009-01-01	8.900
2010-01-01	9.550
2011-01-01	9.725
2012-01-01	10.925
2013-01-01	11.575
2014-01-01	11.375
2015-01-01	10.700
2016-01-01	10.100
2017-01-01	9.250