Year	Percent
2003-01-01	20.100
2004-01-01	21.400
2005-01-01	18.725
2006-01-01	18.775
2007-01-01	19.425
2008-01-01	22.325
2009-01-01	22.325
2010-01-01	20.925
2011-01-01	20.850
2012-01-01	22.025
2013-01-01	22.250
2014-01-01	16.625
2015-01-01	16.750
2016-01-01	19.500
2017-01-01	20.075