Year	Percent
2006-01-01	29.500
2007-01-01	29.475
2008-01-01	28.950
2009-01-01	28.600
2010-01-01	28.075
2011-01-01	27.050
2012-01-01	27.650
2013-01-01	27.100
2014-01-01	26.375
2015-01-01	26.075
2016-01-01	25.600
2017-01-01	25.250