Period	Persons
1967-01-01	1855445
1972-01-01	2247575
1977-01-01	2518572
1982-01-01	2915098
1987-01-01	3472650
1992-01-01	3985364
1997-01-01	4504291
2002-01-01	5123674
2007-01-01	5834806
2012-01-01	6642928