Year	Number
2004-01-01	734848
2005-01-01	860737
2006-01-01	1021097
2007-01-01	1187904
2008-01-01	1579553
2009-01-01	1876485
2010-01-01	2123889
2011-01-01	2373948
2012-01-01	2657446
2013-01-01	2785663
2014-01-01	2910599
2015-01-01	3005645
2016-01-01	3429014
2017-01-01	3761655