Year	Percent
2005-01-01	60.900
2006-01-01	64.600
2007-01-01	65.400
2008-01-01	63.600
2009-01-01	60.900
2010-01-01	63.500
2011-01-01	63.950
2012-01-01	62.925
2013-01-01	62.900
2014-01-01	62.450
2015-01-01	60.625
2016-01-01	61.850
2017-01-01	63.875