| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no method | 940 |
57.4%
|
| 1 | folkloric method | 1 |
0.1%
|
| 2 | traditional method | 473 |
28.9%
|
| 3 | modern method | 225 |
13.7%
|