Year Number 2005-01-01 302.1345 2006-01-01 325.5110 2007-01-01 405.8725 2008-01-01 464.5588 2009-01-01 465.1219 2010-01-01 430.7788 2011-01-01 417.1654 2012-01-01 432.7139 2013-01-01 444.1651 2014-01-01 453.3324 2015-01-01 445.5336 2016-01-01 447.7625 2017-01-01 448.5338