Year	Number
2004-01-01	267306
2005-01-01	323928
2006-01-01	428840
2007-01-01	265839
2008-01-01	270496
2009-01-01	287498
2010-01-01	368380
2011-01-01	464678
2012-01-01	378610
2013-01-01	422305
2014-01-01	441387
2015-01-01	478523