Year	Number
2004-01-01	721
2005-01-01	713
2006-01-01	629
2007-01-01	601
2008-01-01	465
2009-01-01	506
2010-01-01	962
2011-01-01	920
2012-01-01	938
2013-01-01	951
2014-01-01	1147
2015-01-01	902
2016-01-01	902