Year	Percent
2005-01-01	65.100
2006-01-01	65.700
2007-01-01	67.200
2008-01-01	68.400
2009-01-01	68.300
2010-01-01	66.225
2011-01-01	67.425
2012-01-01	68.225
2013-01-01	69.250
2014-01-01	69.225
2015-01-01	70.300
2016-01-01	71.475
2017-01-01	72.175