Year	Percent
2005-01-01	62.550
2006-01-01	63.625
2007-01-01	64.975
2008-01-01	65.950
2009-01-01	65.525
2010-01-01	66.325
2011-01-01	68.050
2012-01-01	68.600
2013-01-01	68.950
2014-01-01	69.300
2015-01-01	69.425
2016-01-01	70.425
2017-01-01	70.950