Year	Percent
2005-01-01	36.025
2006-01-01	35.325
2007-01-01	35.050
2008-01-01	34.850
2009-01-01	34.575
2010-01-01	34.150
2011-01-01	33.125
2012-01-01	32.850
2013-01-01	32.250
2014-01-01	31.850
2015-01-01	31.750
2016-01-01	30.900
2017-01-01	30.500