Year	Percent
2006-01-01	41.900
2007-01-01	41.625
2008-01-01	41.300
2009-01-01	38.950
2010-01-01	40.225
2011-01-01	43.350
2012-01-01	42.500
2013-01-01	43.125
2014-01-01	44.950
2015-01-01	45.075
2016-01-01	44.875
2017-01-01	45.375