Year	Percent
2003-01-01	38.225
2004-01-01	38.075
2005-01-01	38.000
2006-01-01	37.950
2007-01-01	37.675
2008-01-01	37.500
2009-01-01	37.125
2010-01-01	37.100
2011-01-01	37.350
2012-01-01	37.050
2013-01-01	37.025
2014-01-01	37.425
2015-01-01	37.500
2016-01-01	37.650
2017-01-01	37.875