Year	Percent
2003-01-01	35.400
2004-01-01	34.200
2005-01-01	33.400
2006-01-01	33.300
2007-01-01	33.125
2008-01-01	33.175
2009-01-01	31.275
2010-01-01	31.800
2011-01-01	32.050
2012-01-01	30.575
2013-01-01	30.150
2014-01-01	29.200
2015-01-01	29.125
2016-01-01	30.025
2017-01-01	29.825