Year	Percent
2005-01-01	58.800
2006-01-01	62.000
2007-01-01	59.700
2008-01-01	61.200
2009-01-01	62.400
2010-01-01	61.500
2011-01-01	62.525
2012-01-01	60.925
2013-01-01	61.175
2014-01-01	61.700
2015-01-01	62.600
2016-01-01	63.175
2017-01-01	62.375