Year Percent 2011-01-01 6.725280000000001 2012-01-01 6.725280000000001 2013-01-01 6.725280000000001 2014-01-01 14.482300000000000 2015-01-01 14.482300000000000 2016-01-01 14.482300000000000 2017-01-01 9.772300000000000