Year	Percent
2005-01-01	43.700
2006-01-01	43.375
2007-01-01	43.175
2008-01-01	42.925
2009-01-01	43.000
2010-01-01	43.150
2011-01-01	43.150
2012-01-01	42.925
2013-01-01	42.975
2014-01-01	43.100
2015-01-01	43.200
2016-01-01	42.900
2017-01-01	42.850