Year Percent 2011-01-01 1.3010200000000000 2012-01-01 1.3010200000000000 2013-01-01 1.3010200000000000 2014-01-01 1.3749200000000001 2015-01-01 1.3749200000000001 2016-01-01 1.3749200000000001 2017-01-01 2.7527600000000000