Year Number 2009-01-01 867.6074 2010-01-01 861.3805 2011-01-01 842.5028 2012-01-01 805.7239 2013-01-01 769.5807 2014-01-01 752.3216 2015-01-01 742.1178 2016-01-01 721.6249 2017-01-01 764.6317