Period	Persons
1967-01-01	5991785
1972-01-01	6260956
1977-01-01	6281174
1982-01-01	6391309
1987-01-01	6545106
1992-01-01	6875364
1997-01-01	7088906
2002-01-01	7284753
2007-01-01	7551117
2012-01-01	7996861