Year	Number
2004-01-01	28
2005-01-01	37
2006-01-01	54
2007-01-01	68
2008-01-01	64
2009-01-01	55
2010-01-01	51
2011-01-01	60
2012-01-01	79
2013-01-01	75
2014-01-01	95
2015-01-01	98