Year	Number
2004-01-01	4066204
2005-01-01	5587805
2006-01-01	6920426
2007-01-01	7427264
2008-01-01	7691916
2009-01-01	8000360
2010-01-01	8447125
2011-01-01	8509472
2012-01-01	8899403
2013-01-01	9162007
2014-01-01	9273971
2015-01-01	9478143
2016-01-01	9209968