Year	Number
2004-01-01	33
2005-01-01	20
2006-01-01	24
2007-01-01	53
2008-01-01	27
2009-01-01	26
2010-01-01	25
2011-01-01	34
2012-01-01	35
2013-01-01	37
2014-01-01	56
2015-01-01	60
2016-01-01	104
2017-01-01	114