Year Percent 2010-01-01 0.6791689999999999 2011-01-01 0.9342610000000000 2012-01-01 0.8062580000000000 2013-01-01 0.3593220000000000 2014-01-01 0.4005000000000000 2015-01-01 0.3039380000000000 2016-01-01 0.5459080000000000 2017-01-01 0.9490480000000000