Year	Percent
2005-01-01	64.000
2006-01-01	64.700
2007-01-01	65.200
2008-01-01	65.900
2009-01-01	65.400
2010-01-01	63.775
2011-01-01	64.475
2012-01-01	64.500
2013-01-01	64.325
2014-01-01	64.650
2015-01-01	64.875
2016-01-01	65.200
2017-01-01	65.175