Period	Persons
1967-01-01	227258
1972-01-01	254282
1977-01-01	243729
1982-01-01	260921
1987-01-01	322655
1992-01-01	377799
1997-01-01	412031
2002-01-01	444150
2007-01-01	493206
2012-01-01	556783