Year	Percent
2008-01-01	39.1060
2009-01-01	41.4869
2010-01-01	38.2187
2011-01-01	41.8120
2012-01-01	43.2078
2013-01-01	45.6190
2014-01-01	49.8169
2015-01-01	45.4662
2016-01-01	42.6622