Year	Number
2004-01-01	291153
2005-01-01	353876
2006-01-01	396886
2007-01-01	436957
2008-01-01	455353
2009-01-01	442395
2010-01-01	463358
2011-01-01	544666
2012-01-01	682084
2013-01-01	394087
2014-01-01	323885
2015-01-01	243118
2016-01-01	240560