Year	Number
2004-01-01	257659
2005-01-01	286247
2006-01-01	318297
2007-01-01	356759
2008-01-01	358682
2009-01-01	401453
2010-01-01	485983
2011-01-01	530577
2012-01-01	572698
2013-01-01	605173
2014-01-01	639766
2015-01-01	682599
2016-01-01	690944