| Value | Category |
|---|---|
| 1 | Benin |
| 2 | Burkina-Faso |
| 3 | Ghana |
| 4 | Guinea |
| 5 | Liberia |
| 6 | Mali |
| 7 | Mauritania |
| 8 | Niger |
| 9 | Nigeria |
| 10 | Senegal |
| 11 | Togo |
| 12 | Central African Republic |
| 13 | Congo Brazzaville |
| 14 | Algeria |
| 15 | Morocco |
| 16 | France |
| 17 | Gambia |
| 18 | Burundi |
| 19 | Equatorial Guinea |
| 20 | Afghanistan |
| 96 | Other country to be specified |
| 97 | Country not specified |
| 98 | Do not know |