Year	Percent
2003-01-01	61.300
2004-01-01	60.250
2005-01-01	59.625
2006-01-01	59.925
2007-01-01	60.025
2008-01-01	60.250
2009-01-01	58.825
2010-01-01	57.850
2011-01-01	56.125
2012-01-01	52.600
2013-01-01	50.950
2014-01-01	49.300
2015-01-01	47.425
2016-01-01	46.350
2017-01-01	45.150