| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | primary | 301 |
74%
|
| 2 | secondary i | 85 |
20.9%
|
| 3 | secondary ii | 13 |
3.2%
|
| 4 | higher | 4 |
1%
|
| 8 | dk | 4 |
1%
|
| Sysmiss | 4736 |