Year	Percent
2005-01-01	41.600
2006-01-01	41.050
2007-01-01	40.875
2008-01-01	40.775
2009-01-01	40.575
2010-01-01	40.625
2011-01-01	39.900
2012-01-01	39.925
2013-01-01	39.650
2014-01-01	39.600
2015-01-01	39.800
2016-01-01	39.000
2017-01-01	38.775