Year	Percent
2005-01-01	63.975
2006-01-01	64.700
2007-01-01	65.450
2008-01-01	65.675
2009-01-01	63.800
2010-01-01	63.250
2011-01-01	63.175
2012-01-01	62.775
2013-01-01	62.450
2014-01-01	62.925
2015-01-01	63.525
2016-01-01	64.325
2017-01-01	65.175