Year Number 2004-01-01 116859 2005-01-01 137106 2006-01-01 164498 2007-01-01 226042 2008-01-01 250287 2009-01-01 262398 2010-01-01 280286 2011-01-01 328087 2012-01-01 382825 2013-01-01 440425 2014-01-01 491856 2015-01-01 547724 2016-01-01 578847 2017-01-01 630437