Period	Persons
1967-01-01	2494491
1972-01-01	2836932
1977-01-01	3130003
1982-01-01	3393250
1987-01-01	3891340
1992-01-01	4497827
1997-01-01	5096724
2002-01-01	5545245
2007-01-01	6013278
2012-01-01	6645827