Period	Persons
1967-01-01	282444
1972-01-01	274892
1977-01-01	220438
1982-01-01	250776
1987-01-01	340942
1992-01-01	399625
1997-01-01	471288
2002-01-01	551399
2007-01-01	639618
2012-01-01	736296