Year	Number
2004-01-01	303112
2005-01-01	333640
2006-01-01	366938
2007-01-01	368612
2008-01-01	379850
2009-01-01	403213
2010-01-01	414654
2011-01-01	433021
2012-01-01	409386
2013-01-01	531297
2014-01-01	593124
2015-01-01	629594
2016-01-01	675677
2017-01-01	685834