Period	Persons
1967-01-01	8310226
1972-01-01	8576200
1977-01-01	8804183
1982-01-01	8917457
1987-01-01	8971359
1992-01-01	8540164
1997-01-01	8312068
2002-01-01	7868468
2007-01-01	7545338
2012-01-01	7305888