Year	Percent
2003-01-01	32.225
2004-01-01	32.300
2005-01-01	32.475
2006-01-01	32.625
2007-01-01	32.650
2008-01-01	32.600
2009-01-01	32.400
2010-01-01	32.475
2011-01-01	32.800
2012-01-01	32.500
2013-01-01	32.750
2014-01-01	33.350
2015-01-01	33.425
2016-01-01	33.675
2017-01-01	33.825