Year Number 2007-01-01 2441.8483 2008-01-01 2512.8441 2009-01-01 2496.5849 2010-01-01 2525.6602 2011-01-01 2538.1677 2012-01-01 2257.4283 2013-01-01 2325.6962 2014-01-01 2358.4139 2015-01-01 2380.0120 2016-01-01 2182.4220 2017-01-01 2078.2188