Period	Persons
1967-01-01	553098
1972-01-01	611990
1977-01-01	676829
1982-01-01	763639
1987-01-01	872158
1992-01-01	998823
1997-01-01	1137412
2002-01-01	1285318
2007-01-01	1447388
2012-01-01	1632572