Year Percent 2011-01-01 8.2629600000000010 2012-01-01 8.2629600000000010 2013-01-01 8.2629600000000010 2014-01-01 3.7547699999999997 2015-01-01 3.7547699999999997 2016-01-01 3.7547699999999997 2017-01-01 10.1087000000000000