Year	Number
2004-01-01	48
2005-01-01	48
2006-01-01	38
2007-01-01	38
2008-01-01	38
2009-01-01	38
2010-01-01	38
2011-01-01	38
2012-01-01	41
2013-01-01	41
2014-01-01	41
2015-01-01	41