Year	Percent
2003-01-01	30.300
2004-01-01	30.225
2005-01-01	30.300
2006-01-01	30.375
2007-01-01	30.300
2008-01-01	30.125
2009-01-01	29.750
2010-01-01	29.750
2011-01-01	29.900
2012-01-01	29.275
2013-01-01	28.875
2014-01-01	29.000
2015-01-01	28.750
2016-01-01	28.575
2017-01-01	28.500