Year	Percent
2008-01-01	28.1007
2009-01-01	30.7950
2010-01-01	30.3892
2011-01-01	27.4457
2012-01-01	27.1104
2013-01-01	23.0532
2014-01-01	21.3843
2015-01-01	18.3975