Year	Number
2004-01-01	69
2005-01-01	69
2006-01-01	69
2007-01-01	69
2008-01-01	69
2009-01-01	69
2010-01-01	68
2011-01-01	68
2012-01-01	68
2013-01-01	68
2014-01-01	68
2015-01-01	68
2016-01-01	58
2017-01-01	58