Year Number 2008-01-01 109.5894 2009-01-01 111.3291 2010-01-01 112.2716 2011-01-01 145.6618 2012-01-01 144.8399 2013-01-01 145.5008 2014-01-01 155.6597 2015-01-01 151.5308 2016-01-01 156.5820