Year	Number
2004-01-01	11
2005-01-01	11
2006-01-01	10
2007-01-01	11
2008-01-01	11
2009-01-01	11
2010-01-01	11
2011-01-01	11
2012-01-01	10
2013-01-01	10
2014-01-01	10
2015-01-01	10
2016-01-01	10