Year	Percent
2000-01-01	60.375
2001-01-01	62.225
2002-01-01	65.200
2003-01-01	61.100
2004-01-01	62.500
2005-01-01	63.775
2006-01-01	64.300
2007-01-01	62.100
2008-01-01	59.125
2009-01-01	60.950
2010-01-01	62.225
2011-01-01	59.975
2012-01-01	59.225
2013-01-01	60.225
2014-01-01	60.800
2015-01-01	58.250
2016-01-01	56.725
2017-01-01	53.900