| Value | Category | Cases | |
|---|---|---|---|
| 1 | primary | 20367 |
75%
|
| 2 | lowest secondary | 5270 |
19.4%
|
| 3 | upper secondary | 1209 |
4.5%
|
| 4 | higher | 313 |
1.2%
|
| 11 | .Z | 10352 |