Year	Number
2004-01-01	75
2005-01-01	66
2006-01-01	64
2007-01-01	58
2008-01-01	55
2009-01-01	54
2010-01-01	47
2011-01-01	46
2012-01-01	45
2013-01-01	45
2014-01-01	44
2015-01-01	42
2016-01-01	39