| Value | Category | Cases | |
|---|---|---|---|
| 0 | Pre-primary or none | 31 |
2.3%
|
| 1 | Primary | 17 |
1.3%
|
| 2 | Lower secondary | 171 |
12.6%
|
| 3 | Upper secondary | 661 |
48.9%
|
| 4 | Higher | 277 |
20.5%
|
| Sysmiss | 195 |
14.4%
|