Year	Percent
2006-01-01	62.975
2007-01-01	62.775
2008-01-01	62.550
2009-01-01	60.725
2010-01-01	62.675
2011-01-01	65.075
2012-01-01	64.975
2013-01-01	65.225
2014-01-01	64.825
2015-01-01	65.000
2016-01-01	65.100
2017-01-01	65.650