Year	Percent
2006-01-01	40.7
2007-01-01	40.7
2008-01-01	40.7
2009-01-01	40.7
2010-01-01	43.4
2011-01-01	43.4
2012-01-01	43.4
2013-01-01	43.4
2014-01-01	43.4
2015-01-01	43.4
2016-01-01	47.8