Period	Persons
1967-01-01	351463
1972-01-01	372614
1977-01-01	363108
1982-01-01	367895
1987-01-01	386852
1992-01-01	418700
1997-01-01	447771
2002-01-01	480099
2007-01-01	510433
2012-01-01	534541