Year	Percent
2006-01-01	38.8
2007-01-01	38.8
2008-01-01	38.8
2009-01-01	38.8
2010-01-01	33.3
2011-01-01	33.3
2012-01-01	33.3
2013-01-01	33.3
2014-01-01	33.3
2015-01-01	33.3
2016-01-01	33.3
2017-01-01	41.5