Year	Percent
2003-01-01	28.550
2004-01-01	27.975
2005-01-01	21.950
2006-01-01	19.725
2007-01-01	20.550
2008-01-01	20.575
2009-01-01	24.500
2010-01-01	23.900
2011-01-01	25.475
2012-01-01	22.000
2013-01-01	18.525
2014-01-01	21.225
2015-01-01	18.050
2016-01-01	16.550
2017-01-01	17.675