Year	Percent
2007-01-01	30.4985
2008-01-01	29.8220
2009-01-01	33.8415
2010-01-01	28.2686
2011-01-01	40.0251
2012-01-01	54.2404
2013-01-01	53.9092
2014-01-01	29.7568