| Value | Category | Cases | |
|---|---|---|---|
| 0 | Pre-primary or none | 4 |
0.3%
|
| 1 | Primary | 11 |
0.7%
|
| 2 | Lower secondary | 71 |
4.8%
|
| 3 | Upper secondary | 531 |
35.9%
|
| 4 | Higher | 206 |
13.9%
|
| Sysmiss | 656 |
44.4%
|