Year	Percent
2005-01-01	35.300
2006-01-01	33.000
2007-01-01	35.500
2008-01-01	33.900
2009-01-01	31.500
2010-01-01	32.625
2011-01-01	32.125
2012-01-01	33.750
2013-01-01	32.950
2014-01-01	32.525
2015-01-01	31.675
2016-01-01	31.025
2017-01-01	32.250