Year Number 2007-01-01 260694 2008-01-01 289078 2009-01-01 231091 2010-01-01 274343 2011-01-01 292949 2012-01-01 279511 2013-01-01 319064 2014-01-01 270447 2015-01-01 302777 2016-01-01 550174 2017-01-01 614886