Year Number 2007-01-01 701.2226 2008-01-01 670.1407 2009-01-01 596.4110 2010-01-01 547.2982 2011-01-01 582.5404 2012-01-01 628.0495 2013-01-01 683.1679 2014-01-01 788.4010 2015-01-01 915.4013