Year	Number
2004-01-01	2701
2005-01-01	2814
2006-01-01	2816
2007-01-01	3085
2008-01-01	3236
2009-01-01	3319
2010-01-01	3351
2011-01-01	3566
2012-01-01	3416
2013-01-01	3237
2014-01-01	3231
2015-01-01	3285
2016-01-01	2850