Year	Percent
2006-01-01	23.075
2007-01-01	23.150
2008-01-01	24.025
2009-01-01	25.525
2010-01-01	27.125
2011-01-01	28.400
2012-01-01	29.025
2013-01-01	30.300
2014-01-01	30.225
2015-01-01	31.400
2016-01-01	32.400
2017-01-01	33.550