Year	Number
2004-01-01	14750
2005-01-01	14012
2006-01-01	11548
2007-01-01	11286
2008-01-01	11277
2009-01-01	10936
2010-01-01	10826
2011-01-01	10725
2012-01-01	9610
2013-01-01	10143
2014-01-01	9956
2015-01-01	9698
2016-01-01	9407
2017-01-01	9004