Year	Percent
2005-01-01	32.950
2006-01-01	33.450
2007-01-01	34.200
2008-01-01	34.475
2009-01-01	32.850
2010-01-01	31.700
2011-01-01	31.225
2012-01-01	30.600
2013-01-01	30.300
2014-01-01	30.575
2015-01-01	31.250
2016-01-01	32.050
2017-01-01	32.875