Year	Percent
2006-01-01	42.750
2007-01-01	42.725
2008-01-01	43.025
2009-01-01	42.550
2010-01-01	44.500
2011-01-01	46.525
2012-01-01	46.950
2013-01-01	47.550
2014-01-01	47.350
2015-01-01	47.900
2016-01-01	48.275
2017-01-01	49.000