Period	Persons
1967-01-01	7037
1972-01-01	7459
1977-01-01	7816
1982-01-01	8284
1987-01-01	8821
1992-01-01	9103
1997-01-01	9298
2002-01-01	9530
2007-01-01	9764
2012-01-01	9860