Year	Percent
2003-01-01	69.600
2004-01-01	72.000
2005-01-01	71.200
2006-01-01	72.200
2007-01-01	73.500
2008-01-01	71.000
2009-01-01	67.750
2010-01-01	75.250
2011-01-01	75.125
2012-01-01	73.250
2013-01-01	74.075
2014-01-01	73.675
2015-01-01	64.850
2016-01-01	69.300
2017-01-01	69.525