Year	Percent
2006-01-01	41.550
2007-01-01	41.500
2008-01-01	41.700
2009-01-01	41.150
2010-01-01	43.000
2011-01-01	44.950
2012-01-01	45.350
2013-01-01	45.900
2014-01-01	45.500
2015-01-01	45.975
2016-01-01	46.325
2017-01-01	47.075