Year	Number
2004-01-01	0
2005-01-01	2
2006-01-01	8
2007-01-01	8
2008-01-01	10
2009-01-01	30
2010-01-01	70
2011-01-01	64
2012-01-01	90
2013-01-01	726
2014-01-01	698
2015-01-01	3363
2016-01-01	7556