Period	Persons
1967-01-01	145354
1972-01-01	172599
1977-01-01	207942
1982-01-01	246502
1987-01-01	286868
1992-01-01	329984
1997-01-01	379861
2002-01-01	434880
2007-01-01	492148
2012-01-01	549598