Year	Percent
2008-01-01	4.66092
2009-01-01	7.61375
2010-01-01	9.50062
2011-01-01	9.86040
2012-01-01	11.59900
2013-01-01	11.72640
2014-01-01	13.98290
2015-01-01	14.44850