Year Number 2004-01-01 91.6924 2005-01-01 107.4040 2006-01-01 94.4750 2007-01-01 86.2404 2008-01-01 83.2318 2009-01-01 70.1421 2010-01-01 72.9210 2011-01-01 96.3162 2012-01-01 114.4920 2013-01-01 102.7311 2014-01-01 89.5371 2015-01-01 94.7258 2016-01-01 103.9747