Year	Number
2004-01-01	38515
2005-01-01	44339
2006-01-01	52141
2007-01-01	61273
2008-01-01	69303
2009-01-01	64514
2010-01-01	64529
2011-01-01	72515
2012-01-01	91216
2013-01-01	106480
2014-01-01	102156
2015-01-01	14149
2016-01-01	20850
2017-01-01	18003