Year	Number
2004-01-01	147201
2005-01-01	186951
2006-01-01	213805
2007-01-01	240094
2008-01-01	227912
2009-01-01	236224
2010-01-01	232405
2011-01-01	264120
2012-01-01	353370
2013-01-01	424842
2014-01-01	410892
2015-01-01	449665
2016-01-01	582219