Period	Persons
1967-01-01	3467314832
1972-01-01	3840517699
1977-01-01	4212354343
1982-01-01	4596685784
1987-01-01	5013060287
1992-01-01	5448357753
1997-01-01	5861505672
2002-01-01	6257990301
2007-01-01	6646900362
2012-01-01	7043902890