Period	Persons
1967-01-01	12598201
1972-01-01	13328593
1977-01-01	13856185
1982-01-01	14312690
1987-01-01	14665037
1992-01-01	15184166
1997-01-01	15610650
2002-01-01	16148929
2007-01-01	16381696
2012-01-01	16754962