Year	Number
2004-01-01	0
2005-01-01	0
2006-01-01	0
2007-01-01	4
2008-01-01	13
2009-01-01	13
2010-01-01	17
2011-01-01	33
2012-01-01	39
2013-01-01	35
2014-01-01	38
2015-01-01	54
2016-01-01	70