Year	Number
2004-01-01	5011125
2005-01-01	5400679
2006-01-01	5473952
2007-01-01	5582695
2008-01-01	5809598
2009-01-01	5940965
2010-01-01	6156484
2011-01-01	6016559
2012-01-01	6941988
2013-01-01	7986816
2014-01-01	9312432
2015-01-01	10455657
2016-01-01	13904284