Year	Percent
2005-01-01	11.500
2006-01-01	11.700
2007-01-01	11.100
2008-01-01	10.200
2009-01-01	10.000
2010-01-01	11.675
2011-01-01	10.975
2012-01-01	10.550
2013-01-01	10.800
2014-01-01	10.075
2015-01-01	9.800
2016-01-01	9.425
2017-01-01	9.625