Year	Number
2004-01-01	219927
2005-01-01	294559
2006-01-01	472838
2007-01-01	889930
2008-01-01	1260336
2009-01-01	1133299
2010-01-01	1334844
2011-01-01	1817895
2012-01-01	1832425
2013-01-01	2383555
2014-01-01	2796549
2015-01-01	2885114
2016-01-01	3096927