Year	Percent
2006-01-01	25.050
2007-01-01	25.175
2008-01-01	26.150
2009-01-01	27.825
2010-01-01	29.625
2011-01-01	31.050
2012-01-01	31.775
2013-01-01	33.250
2014-01-01	33.550
2015-01-01	34.900
2016-01-01	36.175
2017-01-01	37.525