Year	Percent
2006-01-01	23
2007-01-01	23.0
2008-01-01	23.0
2009-01-01	23.0
2010-01-01	37.9
2011-01-01	37.9
2012-01-01	37.9
2013-01-01	37.9
2014-01-01	37.9
2015-01-01	37.9
2016-01-01	37.9
2017-01-01	35.1