Period	Persons
1967-01-01	631398
1972-01-01	740118
1977-01-01	888776
1982-01-01	1071254
1987-01-01	1263269
1992-01-01	1465072
1997-01-01	1657349
2002-01-01	1808976
2007-01-01	1915187
2012-01-01	2003910