| Value | Category | Cases | |
|---|---|---|---|
| 1 | primary | 3638 |
51.2%
|
| 2 | lower secondary | 2020 |
28.4%
|
| 3 | upper secondary | 981 |
13.8%
|
| 4 | higher | 371 |
5.2%
|
| 8 | don't know | 95 |
1.3%
|
| 9 | 5 |
0.1%
|
|
| 11 | .Z | 1122 |