| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | knows no method | 119 |
6.4%
|
| 1 | knows only folkloric | 2 |
0.1%
|
| 2 | knows only trad. mth | 134 |
7.3%
|
| 3 | knows modern method | 1590 |
86.2%
|