Year	Percent
2005-01-01	17.850
2006-01-01	16.550
2007-01-01	14.975
2008-01-01	15.525
2009-01-01	20.025
2010-01-01	20.950
2011-01-01	21.225
2012-01-01	23.450
2013-01-01	24.225
2014-01-01	23.725
2015-01-01	22.350
2016-01-01	20.900
2017-01-01	18.800