Year	Number
2004-01-01	2378858
2005-01-01	2597766
2006-01-01	2876589
2007-01-01	3107344
2008-01-01	3237560
2009-01-01	3465466
2010-01-01	3516874
2011-01-01	3765783
2012-01-01	4125501
2013-01-01	4259926
2014-01-01	4710624
2015-01-01	5103368
2016-01-01	5222447