Year	Percent
2005-01-01	40.150
2006-01-01	41.650
2007-01-01	43.550
2008-01-01	44.550
2009-01-01	44.375
2010-01-01	44.500
2011-01-01	46.075
2012-01-01	44.500
2013-01-01	45.225
2014-01-01	44.325
2015-01-01	44.000
2016-01-01	44.450
2017-01-01	45.500