Year	Percent
2003-01-01	45.000
2004-01-01	45.500
2005-01-01	47.100
2006-01-01	49.200
2007-01-01	50.750
2008-01-01	48.700
2009-01-01	50.050
2010-01-01	50.525
2011-01-01	50.025
2012-01-01	52.075
2013-01-01	52.250
2014-01-01	53.725
2015-01-01	55.350
2016-01-01	54.850
2017-01-01	56.375