Year	Percent
2006-01-01	76.925
2007-01-01	76.850
2008-01-01	75.975
2009-01-01	74.475
2010-01-01	72.875
2011-01-01	71.600
2012-01-01	70.975
2013-01-01	69.700
2014-01-01	69.775
2015-01-01	68.600
2016-01-01	67.600
2017-01-01	66.450