| Value | Category | Cases | |
|---|---|---|---|
| 1 | primary | 5568 |
49.9%
|
| 2 | lower secondary | 3237 |
29%
|
| 3 | upper secondary | 1491 |
13.4%
|
| 4 | higher | 620 |
5.6%
|
| 8 | don't know | 231 |
2.1%
|
| 9 | 5 |
0%
|
|
| 11 | .Z | 7602 |