Period	Persons
1967-01-01	31987155
1972-01-01	33055650
1977-01-01	34689050
1982-01-01	36230481
1987-01-01	37668045
1992-01-01	38363667
1997-01-01	38649660
2002-01-01	38230364
2007-01-01	38120560
2012-01-01	38535873