Year	Number
2004-01-01	45
2005-01-01	48
2006-01-01	49
2007-01-01	52
2008-01-01	56
2009-01-01	56
2010-01-01	58
2011-01-01	55
2012-01-01	60
2013-01-01	68
2014-01-01	64
2015-01-01	7