Period	Persons
1967-01-01	1224187
1972-01-01	1418556
1977-01-01	1647320
1982-01-01	1905411
1987-01-01	2198025
1992-01-01	2511819
1997-01-01	2878333
2002-01-01	3283719
2007-01-01	3758858
2012-01-01	4337051