Year	Number
2007-01-01	171859
2008-01-01	371915
2009-01-01	341373
2010-01-01	321162
2011-01-01	298053
2012-01-01	312637
2013-01-01	302886
2014-01-01	289268
2015-01-01	282826
2016-01-01	296134
2017-01-01	340789