Year	Number
2004-01-01	1885929
2005-01-01	2722398
2006-01-01	2888968
2007-01-01	3203555
2008-01-01	3423246
2009-01-01	3406640
2010-01-01	3832936
2011-01-01	3710890
2012-01-01	3759918
2013-01-01	4079990
2014-01-01	4233374
2015-01-01	4703346
2016-01-01	4776716
2017-01-01	4983644