Period	Persons
1967-01-01	10913360
1972-01-01	12753995
1977-01-01	14791449
1982-01-01	16889450
1987-01-01	19144237
1992-01-01	21449000
1997-01-01	23667000
2002-01-01	25271850
2007-01-01	26868000
2012-01-01	29774500