Year	Percent
2005-01-01	34.300
2006-01-01	31.400
2007-01-01	32.600
2008-01-01	32.900
2009-01-01	32.700
2010-01-01	31.900
2011-01-01	31.450
2012-01-01	32.425
2013-01-01	31.975
2014-01-01	32.100
2015-01-01	32.500
2016-01-01	31.675
2017-01-01	31.325