Year Percent 2011-01-01 4.452030000000001 2012-01-01 4.452030000000001 2013-01-01 4.452030000000001 2014-01-01 1.946850000000000 2015-01-01 1.946850000000000 2016-01-01 1.946850000000000 2017-01-01 6.516280000000000