Year	Percent
2005-01-01	62.200
2006-01-01	62.875
2007-01-01	63.150
2008-01-01	63.675
2009-01-01	64.075
2010-01-01	64.400
2011-01-01	64.775
2012-01-01	65.575
2013-01-01	66.050
2014-01-01	66.525
2015-01-01	66.800
2016-01-01	67.325
2017-01-01	67.800