Year Number 2007-01-01 47200.1433 2008-01-01 68322.3288 2009-01-01 64079.8578 2010-01-01 63407.7187 2011-01-01 63762.8592 2012-01-01 72511.6693 2013-01-01 75151.3274 2014-01-01 68236.8067 2015-01-01 71833.8106 2016-01-01 73104.3008 2017-01-01 76209.2876