Year	Number
2004-01-01	205
2005-01-01	241
2006-01-01	130
2007-01-01	140
2008-01-01	114
2009-01-01	378
2010-01-01	692
2011-01-01	5167
2012-01-01	3493
2013-01-01	545
2014-01-01	657
2015-01-01	1955
2016-01-01	4925