Year	Number
2007-01-01	9998
2008-01-01	10923
2009-01-01	10511
2010-01-01	9951
2011-01-01	9131
2012-01-01	8233
2013-01-01	8057
2014-01-01	6839
2015-01-01	6063
2016-01-01	5491
2017-01-01	5660