Period	Persons
1967-01-01	41900
1972-01-01	48300
1977-01-01	49400
1982-01-01	51500
1987-01-01	54100
1992-01-01	55300
1997-01-01	56000
2002-01-01	56609
2007-01-01	56555
2012-01-01	56810