Year	Number
2004-01-01	77
2005-01-01	75
2006-01-01	75
2007-01-01	70
2008-01-01	69
2009-01-01	68
2010-01-01	66
2011-01-01	66
2012-01-01	66
2013-01-01	66
2014-01-01	65
2015-01-01	62
2016-01-01	63
2017-01-01	62