Year	Percent
2003-01-01	22.700
2004-01-01	24.300
2005-01-01	22.900
2006-01-01	22.250
2007-01-01	22.250
2008-01-01	23.025
2009-01-01	23.600
2010-01-01	23.200
2011-01-01	23.600
2012-01-01	22.900
2013-01-01	22.350
2014-01-01	21.350
2015-01-01	20.350
2016-01-01	20.225
2017-01-01	21.125