| Value | Category | Cases | |
|---|---|---|---|
| 0 | Knows no method | 18 |
0.2%
|
| 1 | Knows only folkloric | 6809 |
57.1%
|
| 2 | Knows only trad. mth | 1712 |
14.4%
|
| 3 | Knows modern method | 3379 |
28.4%
|