Year Number 2010-01-01 33.5152 2011-01-01 104.4035 2012-01-01 228.5751 2013-01-01 391.1301 2014-01-01 969.3103 2015-01-01 1113.0888 2016-01-01 1372.3032 2017-01-01 1279.8769