Period	Persons
1967-01-01	26280676
1972-01-01	30135531
1977-01-01	33615472
1982-01-01	37110033
1987-01-01	43477401
1992-01-01	51525658
1997-01-01	60584273
2002-01-01	69948344
2007-01-01	80440708
2012-01-01	91728849