Year Number 2008-01-01 45.8548 2009-01-01 62.6369 2010-01-01 74.0273 2011-01-01 85.1583 2012-01-01 94.0528 2013-01-01 136.6808 2014-01-01 152.7829 2015-01-01 178.0352 2016-01-01 166.5323