Year	Number
2004-01-01	43339
2005-01-01	55850
2006-01-01	62334
2007-01-01	63090
2008-01-01	75928
2009-01-01	80540
2010-01-01	81873
2011-01-01	123692
2012-01-01	145577
2013-01-01	186835
2014-01-01	173619
2015-01-01	181750
2016-01-01	222726