Period	Persons
1967-01-01	519722246
1972-01-01	580798773
1977-01-01	651935141
1982-01-01	731443752
1987-01-01	816328792
1992-01-01	903749636
1997-01-01	990460131
2002-01-01	1076705723
2007-01-01	1159095250
2012-01-01	1236686732