Year	Percent
2005-01-01	44.775
2006-01-01	43.925
2007-01-01	43.200
2008-01-01	42.300
2009-01-01	41.600
2010-01-01	41.300
2011-01-01	40.775
2012-01-01	39.050
2013-01-01	37.475
2014-01-01	36.125
2015-01-01	34.975
2016-01-01	33.425
2017-01-01	32.200