Year Percent 2011-01-01 11.604000000000001 2012-01-01 11.604000000000001 2013-01-01 11.604000000000001 2014-01-01 14.360100000000000 2015-01-01 14.360100000000000 2016-01-01 14.360100000000000 2017-01-01 19.604000000000000