Year	Number
2004-01-01	3702804
2005-01-01	3787092
2006-01-01	3874592
2007-01-01	4035301
2008-01-01	4195940
2009-01-01	4307220
2010-01-01	4480043
2011-01-01	4270280
2012-01-01	5068199
2013-01-01	5569261
2014-01-01	6289075
2015-01-01	7853865
2016-01-01	9038023