Period	Persons
1967-01-01	32682947
1972-01-01	34502705
1977-01-01	36370050
1982-01-01	37942805
1987-01-01	38630820
1992-01-01	39067745
1997-01-01	39582413
2002-01-01	41431558
2007-01-01	45226803
2012-01-01	46761264