| Value |
Category |
| 0 |
1904- |
| 1 |
1953- |
| 2 |
1960- |
| 3 |
1964- |
| 4 |
1970- |
| 5 |
1980- |
| 6 |
1992- |
| 7 |
2000- |
| 8 |
2004- |
| 9 |
2006- |
| 10 |
2009- |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.