Year Number 2008-01-01 1603.1506 2009-01-01 1636.5552 2010-01-01 1724.1883 2011-01-01 1751.3262 2012-01-01 2100.5610 2013-01-01 2191.6262 2014-01-01 1845.8533 2015-01-01 1871.7511 2016-01-01 1839.2684