Year Percent 2011-01-01 9.739180000000001 2012-01-01 9.739180000000001 2013-01-01 9.739180000000001 2014-01-01 14.915800000000000 2015-01-01 14.915800000000000 2016-01-01 14.915800000000000 2017-01-01 16.783500000000000