Year	Number
2006-01-01	34
2007-01-01	78
2008-01-01	87
2009-01-01	86
2010-01-01	86
2011-01-01	16
2012-01-01	37
2013-01-01	15
2014-01-01	15
2015-01-01	15
2016-01-01	15
2017-01-01	1