Year	Percent
2005-01-01	59.900
2006-01-01	63.300
2007-01-01	62.600
2008-01-01	62.400
2009-01-01	61.600
2010-01-01	62.500
2011-01-01	63.250
2012-01-01	61.950
2013-01-01	62.075
2014-01-01	62.050
2015-01-01	61.550
2016-01-01	62.500
2017-01-01	63.125