Year Number 2009-01-01 798.7353 2010-01-01 792.9730 2011-01-01 773.2886 2012-01-01 741.8926 2013-01-01 708.0318 2014-01-01 692.6103 2015-01-01 683.4812 2016-01-01 666.3982 2017-01-01 711.3536