Year	Percent
2003-01-01	30.700
2004-01-01	30.900
2005-01-01	32.400
2006-01-01	33.600
2007-01-01	32.675
2008-01-01	35.050
2009-01-01	39.375
2010-01-01	40.550
2011-01-01	40.400
2012-01-01	41.875
2013-01-01	42.450
2014-01-01	44.425
2015-01-01	40.325
2016-01-01	41.650
2017-01-01	41.075