Year	Number
2004-01-01	3225428
2005-01-01	4602353
2006-01-01	4996749
2007-01-01	5392259
2008-01-01	5199673
2009-01-01	5446680
2010-01-01	5376610
2011-01-01	5680612
2012-01-01	5803925
2013-01-01	6080091
2014-01-01	6446425
2015-01-01	6892891
2016-01-01	7524665
2017-01-01	8167660