Year	Percent
2003-01-01	42.200
2004-01-01	41.500
2005-01-01	40.900
2006-01-01	40.900
2007-01-01	40.175
2008-01-01	40.400
2009-01-01	38.650
2010-01-01	39.025
2011-01-01	39.375
2012-01-01	37.775
2013-01-01	37.225
2014-01-01	36.475
2015-01-01	35.225
2016-01-01	36.300
2017-01-01	36.550