Year	Percent
2005-01-01	70.825
2006-01-01	71.650
2007-01-01	72.400
2008-01-01	72.650
2009-01-01	70.600
2010-01-01	70.075
2011-01-01	69.950
2012-01-01	69.625
2013-01-01	69.400
2014-01-01	70.050
2015-01-01	70.850
2016-01-01	71.850
2017-01-01	72.900