| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 2022 |
55%
|
| 2 | primary | 891 |
24.2%
|
| 3 | secondary | 83 |
2.3%
|
| 4 | higher than secondary | 13 |
0.4%
|
| 8 | dk | 670 |
18.2%
|
| Sysmiss | 12306 |