Year	Number
2004-01-01	8342
2005-01-01	8314
2006-01-01	8817
2007-01-01	9045
2008-01-01	11763
2009-01-01	11673
2010-01-01	11734
2011-01-01	11439
2012-01-01	10891
2013-01-01	10662
2014-01-01	10838
2015-01-01	10684
2016-01-01	10833