Year Percent 2011-01-01 0.8087080000000000 2012-01-01 0.8087080000000000 2013-01-01 0.8087080000000000 2014-01-01 3.5848800000000005 2015-01-01 3.5848800000000005 2016-01-01 3.5848800000000005 2017-01-01 5.3396200000000000