Year Number 2005-01-01 920.218273185002 2006-01-01 1038.153318167950 2007-01-01 1060.784418577320 2008-01-01 1291.550472994500 2009-01-01 1074.334131519580 2010-01-01 1065.292971725980 2011-01-01 1085.970285918660 2012-01-01 1042.539004837080 2013-01-01 1080.430317614550 2014-01-01 1078.379897394420 2015-01-01 1083.648810952170