Year	Number
2004-01-01	3469
2005-01-01	3456
2006-01-01	3424
2007-01-01	3404
2008-01-01	3341
2009-01-01	3302
2010-01-01	3253
2011-01-01	3162
2012-01-01	3117
2013-01-01	3030
2014-01-01	2972
2015-01-01	2914
2016-01-01	2848
2017-01-01	1799