Year	Number
2004-01-01	5811
2005-01-01	5893
2006-01-01	6028
2007-01-01	6168
2008-01-01	8485
2009-01-01	6718
2010-01-01	6261
2011-01-01	289466
2012-01-01	288543
2013-01-01	282307
2014-01-01	389981
2015-01-01	336427
2016-01-01	356849