Year Number 2005-01-01 339.5395 2006-01-01 355.6154 2007-01-01 363.2512 2008-01-01 421.3479 2009-01-01 390.5438 2010-01-01 520.0020 2011-01-01 606.5096 2012-01-01 590.7823 2013-01-01 620.4455 2014-01-01 718.4985 2015-01-01 747.2103 2016-01-01 766.7698