Period	Persons
1967-01-01	3439514
1972-01-01	3937583
1977-01-01	4414427
1982-01-01	4804671
1987-01-01	5133598
1992-01-01	5511138
1997-01-01	5855226
2002-01-01	6008308
2007-01-01	6122952
2012-01-01	6297394