Period	Persons
1967-01-01	5524930
1972-01-01	6376333
1977-01-01	7312553
1982-01-01	8319351
1987-01-01	9417031
1992-01-01	10598168
1997-01-01	11799289
2002-01-01	13030041
2007-01-01	14268397
2012-01-01	15492264