Year	Number
2004-01-01	3095
2005-01-01	3708
2006-01-01	4815
2007-01-01	4480
2008-01-01	5923
2009-01-01	7106
2010-01-01	9352
2011-01-01	10328
2012-01-01	14094
2013-01-01	13356
2014-01-01	14505
2015-01-01	24043