Year	Number
2004-01-01	2932
2005-01-01	2944
2006-01-01	3054
2007-01-01	3240
2008-01-01	3404
2009-01-01	3396
2010-01-01	3265
2011-01-01	3192
2012-01-01	3061
2013-01-01	3072
2014-01-01	3601
2015-01-01	3382
2016-01-01	3373
2017-01-01	3376