Year Number 2008-01-01 1257.7676 2009-01-01 1323.8714 2010-01-01 1376.8695 2011-01-01 1387.6274 2012-01-01 1814.5572 2013-01-01 1460.5964 2014-01-01 1541.8994 2015-01-01 1496.3385 2016-01-01 1466.2215