Period	Persons
1967-01-01	3618161
1972-01-01	3799098
1977-01-01	3992930
1982-01-01	4175238
1987-01-01	4489555
1992-01-01	4143068
1997-01-01	3535998
2002-01-01	3897579
2007-01-01	3868665
2012-01-01	3833916