| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Neither certificate or registered | 208 |
23.1%
|
| 1 | Has certificate | 463 |
51.5%
|
| 2 | Registered | 215 |
23.9%
|
| 8 | Don't know | 4 |
0.4%
|
| 9 | 9 |
1%
|
|
| Sysmiss | 13525 |