Year	Percent
2003-01-01	13.775
2004-01-01	15.125
2005-01-01	14.000
2006-01-01	12.950
2007-01-01	12.900
2008-01-01	13.825
2009-01-01	15.400
2010-01-01	15.250
2011-01-01	15.475
2012-01-01	15.125
2013-01-01	14.200
2014-01-01	12.650
2015-01-01	11.625
2016-01-01	10.650
2017-01-01	11.350