| Value | Category | Cases | |
|---|---|---|---|
| 1 | Centrale | 779 |
10.9%
|
| 2 | Kara | 1528 |
21.5%
|
| 3 | Maritime | 1544 |
21.7%
|
| 4 | Plateaux | 1996 |
28%
|
| 5 | Savanes | 1270 |
17.8%
|