Year Number 2008-01-01 754213.000 2009-01-01 743066.000 2010-01-01 685013.000 2011-01-01 622518.000 2012-01-01 577552.000 2013-01-01 514894.000 2014-01-01 389662.000 2015-01-01 274935.000 2016-01-01 249451.515