Year Number 2008-01-01 1026.3632 2009-01-01 1024.5541 2010-01-01 1067.0768 2011-01-01 1055.2955 2012-01-01 944.2814 2013-01-01 952.1009 2014-01-01 931.7945 2015-01-01 1004.3902 2016-01-01 989.3691