Year	Number
2004-01-01	7527
2005-01-01	8084
2006-01-01	9465
2007-01-01	11244
2008-01-01	11801
2009-01-01	8748
2010-01-01	4685
2011-01-01	2606
2012-01-01	1515
2013-01-01	1032