Year Percent 2009-01-01 70.5000 2010-01-01 81.6118 2011-01-01 89.9221 2012-01-01 80.5497 2013-01-01 84.3854 2014-01-01 83.7328 2015-01-01 77.4913 2016-01-01 84.4449