Year	Percent
2003-01-01	62.775
2004-01-01	62.450
2005-01-01	62.250
2006-01-01	62.100
2007-01-01	62.425
2008-01-01	62.850
2009-01-01	61.750
2010-01-01	61.625
2011-01-01	61.450
2012-01-01	61.100
2013-01-01	60.525
2014-01-01	59.625
2015-01-01	59.375
2016-01-01	59.525
2017-01-01	59.925