Year	Percent
2006-01-01	30.325
2007-01-01	30.200
2008-01-01	30.275
2009-01-01	28.925
2010-01-01	29.975
2011-01-01	32.025
2012-01-01	31.525
2013-01-01	32.225
2014-01-01	33.525
2015-01-01	34.075
2016-01-01	34.100
2017-01-01	34.350