Period	Persons
1967-01-01	254371
1972-01-01	293218
1977-01-01	309609
1982-01-01	310092
1987-01-01	338984
1992-01-01	368873
1997-01-01	417562
2002-01-01	459140
2007-01-01	483713
2012-01-01	494401