| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no method | 19291 |
87.1%
|
| 1 | folkloric method | 17 |
0.1%
|
| 2 | traditional method | 1554 |
7%
|
| 3 | modern method | 1283 |
5.8%
|