Period	Persons
1967-01-01	11799000
1972-01-01	13177000
1977-01-01	14192000
1982-01-01	15178000
1987-01-01	16263900
1992-01-01	17495000
1997-01-01	18517000
2002-01-01	19651400
2007-01-01	20827600
2012-01-01	22722000