Year	Percent
2005-01-01	38.925
2006-01-01	39.575
2007-01-01	40.350
2008-01-01	40.250
2009-01-01	36.925
2010-01-01	36.025
2011-01-01	35.425
2012-01-01	34.475
2013-01-01	33.975
2014-01-01	34.250
2015-01-01	34.900
2016-01-01	35.525
2017-01-01	36.350