Year Number 2004-01-01 207.5546 2005-01-01 283.1755 2006-01-01 329.0263 2007-01-01 344.0235 2008-01-01 372.5920 2009-01-01 379.2472 2010-01-01 378.4673 2011-01-01 381.2650 2012-01-01 389.5396 2013-01-01 393.4560 2014-01-01 390.3626 2015-01-01 385.0927 2016-01-01 378.5975