Year	Number
2004-01-01	62
2005-01-01	117
2006-01-01	134
2007-01-01	163
2008-01-01	268
2009-01-01	220
2010-01-01	107
2011-01-01	225
2012-01-01	907
2013-01-01	3376
2014-01-01	8166
2015-01-01	16740
2016-01-01	22915