Year	Percent
2005-01-01	63.575
2006-01-01	64.525
2007-01-01	65.525
2008-01-01	65.875
2009-01-01	64.450
2010-01-01	64.050
2011-01-01	64.150
2012-01-01	63.725
2013-01-01	63.450
2014-01-01	63.800
2015-01-01	64.450
2016-01-01	65.425
2017-01-01	66.325