Year	Number
2004-01-01	10474
2005-01-01	10667
2006-01-01	10386
2007-01-01	10123
2008-01-01	13609
2009-01-01	11394
2010-01-01	6132
2011-01-01	4706
2012-01-01	3561
2013-01-01	1637
2014-01-01	1352
2015-01-01	1222
2016-01-01	1034