Year Number 2009-01-01 592.8652 2010-01-01 612.6634 2011-01-01 602.8523 2012-01-01 705.7818 2013-01-01 833.2774 2014-01-01 880.7853 2015-01-01 978.7965 2016-01-01 1090.7195