Year	Percent
2005-01-01	69.750
2006-01-01	70.200
2007-01-01	70.375
2008-01-01	70.725
2009-01-01	70.825
2010-01-01	70.975
2011-01-01	71.125
2012-01-01	71.675
2013-01-01	71.975
2014-01-01	72.300
2015-01-01	72.525
2016-01-01	72.925
2017-01-01	73.350