Year Number 2004-01-01 493.4430 2005-01-01 488.6961 2006-01-01 484.2564 2007-01-01 198.1648 2008-01-01 203.8460 2009-01-01 87.4453 2010-01-01 152.3572 2011-01-01 121.2979 2012-01-01 126.5753 2013-01-01 162.4780 2014-01-01 87.1399 2015-01-01 84.6640 2016-01-01 124.8903