Year	Number
2004-01-01	3141006
2005-01-01	3368716
2006-01-01	3772111
2007-01-01	3242347
2008-01-01	3255625
2009-01-01	3758862
2010-01-01	4295692
2011-01-01	4816360
2012-01-01	5573034
2013-01-01	6110164
2014-01-01	6857537
2015-01-01	7194893
2016-01-01	7713305
2017-01-01	8338988