Year	Percent
2006-01-01	51.000
2007-01-01	50.925
2008-01-01	50.175
2009-01-01	49.225
2010-01-01	48.075
2011-01-01	46.800
2012-01-01	46.650
2013-01-01	45.625
2014-01-01	44.900
2015-01-01	43.975
2016-01-01	43.050
2017-01-01	42.025