Year Number 2008-01-01 666.1008 2009-01-01 742.6383 2010-01-01 588.2735 2011-01-01 564.0187 2012-01-01 610.6587 2013-01-01 627.0019 2014-01-01 621.9506 2015-01-01 628.1454 2016-01-01 386.4140