Year Number 2009-01-01 820.4579 2010-01-01 833.2117 2011-01-01 824.1164 2012-01-01 808.8822 2013-01-01 967.2215 2014-01-01 977.1324 2015-01-01 1030.0159 2016-01-01 1141.3617