Year	Number
2004-01-01	2
2005-01-01	2
2006-01-01	2
2007-01-01	2
2008-01-01	2
2009-01-01	2
2010-01-01	0
2011-01-01	0
2012-01-01	0
2013-01-01	0
2014-01-01	0
2015-01-01	0
2016-01-01	0