Period	Persons
1967-01-01	411478
1972-01-01	472337
1977-01-01	550135
1982-01-01	639333
1987-01-01	767417
1992-01-01	907947
1997-01-01	1006760
2002-01-01	1082183
2007-01-01	1134977
2012-01-01	1230985