Year	Percent
2003-01-01	24.550
2004-01-01	28.200
2005-01-01	25.750
2006-01-01	23.025
2007-01-01	19.825
2008-01-01	23.150
2009-01-01	29.175
2010-01-01	28.650
2011-01-01	28.350
2012-01-01	26.475
2013-01-01	25.225
2014-01-01	22.425
2015-01-01	21.550
2016-01-01	17.425
2017-01-01	17.875