Year	Percent
2005-01-01	9.800
2006-01-01	9.025
2007-01-01	7.925
2008-01-01	7.550
2009-01-01	8.925
2010-01-01	9.600
2011-01-01	9.825
2012-01-01	10.650
2013-01-01	11.025
2014-01-01	10.475
2015-01-01	9.650
2016-01-01	8.900
2017-01-01	8.000