Year	Percent
2005-01-01	61.725
2006-01-01	62.200
2007-01-01	62.575
2008-01-01	62.975
2009-01-01	63.050
2010-01-01	63.050
2011-01-01	63.225
2012-01-01	63.625
2013-01-01	63.700
2014-01-01	63.700
2015-01-01	63.775
2016-01-01	64.125
2017-01-01	64.225