Year Number 2004-01-01 573.3325 2005-01-01 763.6498 2006-01-01 841.7346 2007-01-01 940.7473 2008-01-01 1048.2714 2009-01-01 946.0052 2010-01-01 971.8311 2011-01-01 688.6553 2012-01-01 682.3197 2013-01-01 726.1158 2014-01-01 698.5801 2015-01-01 638.1344 2016-01-01 737.8012