Year	Number
2004-01-01	547
2005-01-01	601
2006-01-01	713
2007-01-01	679
2008-01-01	681
2009-01-01	636
2010-01-01	665
2011-01-01	664
2012-01-01	601
2013-01-01	541
2014-01-01	539
2015-01-01	289
2016-01-01	240
2017-01-01	57