Year	Percent
2005-01-01	46.700
2006-01-01	47.625
2007-01-01	48.950
2008-01-01	49.475
2009-01-01	49.175
2010-01-01	48.775
2011-01-01	49.925
2012-01-01	48.025
2013-01-01	48.675
2014-01-01	47.675
2015-01-01	47.050
2016-01-01	47.375
2017-01-01	48.300