Year	Number
2004-01-01	6
2005-01-01	8
2006-01-01	9
2007-01-01	9
2008-01-01	9
2009-01-01	9
2010-01-01	165
2011-01-01	157
2012-01-01	185
2013-01-01	191
2014-01-01	0
2015-01-01	3
2016-01-01	3
2017-01-01	3