Year Number 2009-01-01 1002.5331 2010-01-01 972.8716 2011-01-01 1034.8128 2012-01-01 1098.4221 2013-01-01 1147.0668 2014-01-01 1213.3571 2015-01-01 1306.0383 2016-01-01 1341.3071 2017-01-01 1455.7954