Year	Persons
1998-01-01	16359800
1999-01-01	16696675
2000-01-01	17110650
2001-01-01	17578775
2002-01-01	17867550
2003-01-01	18044125
2004-01-01	18237850
2005-01-01	18334100
2006-01-01	18603225
2007-01-01	18676500
2008-01-01	18800050
2009-01-01	18454725
2010-01-01	18247075
2011-01-01	18229250
2012-01-01	18013875
2013-01-01	17557475
2014-01-01	17371850
2015-01-01	17356150
2016-01-01	17367950
2017-01-01	17318025