Year	Number
2004-01-01	285859533
2005-01-01	336823493
2006-01-01	554790977
2007-01-01	600404939
2008-01-01	675997558
2009-01-01	574972217
2010-01-01	619111997
2011-01-01	617992463
2012-01-01	178156810
2013-01-01	185280416
2014-01-01	134713208
2015-01-01	202429341
2016-01-01	179471238
2017-01-01	185482919