Year	Percent
2003-01-01	26.100
2004-01-01	20.500
2005-01-01	21.300
2006-01-01	21.200
2007-01-01	18.425
2008-01-01	20.550
2009-01-01	24.175
2010-01-01	20.350
2011-01-01	18.500
2012-01-01	20.050
2013-01-01	19.400
2014-01-01	18.800
2015-01-01	28.775
2016-01-01	25.425
2017-01-01	24.500