Period	Persons
1967-01-01	517026
1972-01-01	540724
1977-01-01	564887
1982-01-01	585565
1987-01-01	603201
1992-01-01	616630
1997-01-01	612812
2002-01-01	612325
2007-01-01	617800
2012-01-01	621081