Year	Number
2004-01-01	7556
2005-01-01	7446
2006-01-01	7323
2007-01-01	7207
2008-01-01	7010
2009-01-01	6771
2010-01-01	6468
2011-01-01	6228
2012-01-01	6026
2013-01-01	5807
2014-01-01	5568
2015-01-01	5304
2016-01-01	5080