Year	Number
2004-01-01	3
2005-01-01	3
2006-01-01	3
2007-01-01	3
2008-01-01	22
2009-01-01	22
2010-01-01	20
2011-01-01	20
2012-01-01	21
2013-01-01	54
2014-01-01	46
2015-01-01	7
2016-01-01	7