Year	Number
2004-01-01	9186
2005-01-01	17699
2006-01-01	28565
2007-01-01	88098
2008-01-01	82477
2009-01-01	123506
2010-01-01	135574
2012-01-01	297490
2013-01-01	306330
2014-01-01	316254
2015-01-01	290113
2016-01-01	222604