Period	Persons
1967-01-01	4718609
1972-01-01	5573282
1977-01-01	6580696
1982-01-01	7876786
1987-01-01	9527192
1992-01-01	10981267
1997-01-01	12045813
2002-01-01	12640922
2007-01-01	12740160
2012-01-01	13724317