Year	Number
2004-01-01	75929
2005-01-01	109735
2006-01-01	132813
2007-01-01	213467
2008-01-01	331910
2009-01-01	505130
2010-01-01	642477
2011-01-01	762696
2012-01-01	906957
2013-01-01	1193021
2014-01-01	1561170
2015-01-01	2078081
2016-01-01	2580704