| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mensuelle | 16 |
19.5%
|
| 2 | Trimestrielle | 46 |
56.1%
|
| 3 | Semestrielle | 19 |
23.2%
|
| 4 | Annuelle | 1 |
1.2%
|
| Sysmiss | 174 |