Year Percent 2011-01-01 0.8212500000000000 2012-01-01 0.8212500000000000 2013-01-01 0.8212500000000000 2014-01-01 1.8365599999999997 2015-01-01 1.8365599999999997 2016-01-01 1.8365599999999997 2017-01-01 2.3039500000000000