Year	Percent
2009-01-01	17.1000
2010-01-01	15.9048
2011-01-01	17.8861
2012-01-01	18.1858
2013-01-01	20.3784
2014-01-01	19.5831
2015-01-01	18.7464
2016-01-01	20.2147