Year	Number
2004-01-01	30
2005-01-01	30
2006-01-01	30
2007-01-01	30
2008-01-01	30
2009-01-01	30
2010-01-01	30
2011-01-01	74
2012-01-01	74
2013-01-01	78
2014-01-01	79
2015-01-01	82
2016-01-01	87