Period	Persons
1967-01-01	1718558
1972-01-01	1900665
1977-01-01	2108539
1982-01-01	2411118
1987-01-01	2740708
1992-01-01	3050789
1997-01-01	3424733
2002-01-01	3767248
2007-01-01	4106897
2012-01-01	4525209