Year Percent 2011-01-01 5.523219999999999 2012-01-01 5.523219999999999 2013-01-01 5.523219999999999 2014-01-01 5.727490000000000 2015-01-01 5.727490000000000 2016-01-01 5.727490000000000 2017-01-01 9.569670000000000