Year	Number
2004-01-01	3452
2005-01-01	3440
2006-01-01	3415
2007-01-01	3434
2008-01-01	3415
2009-01-01	3388
2010-01-01	3422
2011-01-01	3401
2012-01-01	3360
2013-01-01	3272
2014-01-01	3209
2015-01-01	3114
2016-01-01	3018
2017-01-01	2904