Year	Percent
2005-01-01	47.575
2006-01-01	47.550
2007-01-01	47.850
2008-01-01	47.850
2009-01-01	46.625
2010-01-01	45.200
2011-01-01	44.625
2012-01-01	44.125
2013-01-01	43.500
2014-01-01	42.650
2015-01-01	42.125
2016-01-01	41.950
2017-01-01	42.050