Period	Persons
1967-01-01	50829214
1972-01-01	52776806
1977-01-01	54565943
1982-01-01	55816654
1987-01-01	57482783
1992-01-01	58849212
1997-01-01	59963792
2002-01-01	61803229
2007-01-01	64012572
2012-01-01	65696689