Year	Number
2004-01-01	2178091
2005-01-01	2310309
2006-01-01	2966734
2007-01-01	3268071
2008-01-01	3390997
2009-01-01	3676259
2010-01-01	4049057
2011-01-01	4511038
2012-01-01	4784518
2013-01-01	5106942
2014-01-01	5325779
2015-01-01	5391058
2016-01-01	5865697