| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Currently using | 422 |
13.8%
|
| 2 | Used since last brth | 0 |
0%
|
| 3 | Used before last brt | 454 |
14.9%
|
| 4 | Never used | 2174 |
71.3%
|