Year	Number
2004-01-01	67
2005-01-01	67
2006-01-01	67
2007-01-01	67
2008-01-01	67
2009-01-01	67
2010-01-01	67
2011-01-01	70
2012-01-01	70
2013-01-01	74
2014-01-01	81
2015-01-01	86
2016-01-01	86