Year	Number
2004-01-01	2750
2005-01-01	3005
2006-01-01	3281
2007-01-01	3357
2008-01-01	3406
2009-01-01	3573
2010-01-01	3742
2011-01-01	3935
2012-01-01	4106
2013-01-01	4399
2014-01-01	4442
2015-01-01	4553
2016-01-01	4716
2017-01-01	4988