Period	Persons
1967-01-01	3418313
1972-01-01	3983659
1977-01-01	4648096
1982-01-01	5485328
1987-01-01	6740876
1992-01-01	6545100
1997-01-01	6470628
2002-01-01	8987523
2007-01-01	9928143
2012-01-01	11457801