Year	Percent
2005-01-01	39.3043409742132
2006-01-01	40.4659086639893
2007-01-01	40.7400890758630
2008-01-01	40.5652412610303
2009-01-01	40.4686338937212
2010-01-01	40.3115040869888
2011-01-01	40.6358721018679
2012-01-01	41.6973022068665
2013-01-01	41.6936499584160
2014-01-01	40.9552150619787
2015-01-01	41.4117703095080
2016-01-01	41.6898305703797
2017-01-01	41.4030041412412