Period	Persons
1967-01-01	32826235
1972-01-01	37926125
1977-01-01	43651688
1982-01-01	50067906
1987-01-01	57329415
1992-01-01	64996507
1997-01-01	72780928
2002-01-01	80953652
2007-01-01	88875548
2012-01-01	96706764