| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Currently using | 68 |
20.5%
|
| 2 | Used since last brth | 0 |
0%
|
| 3 | Used before last brt | 89 |
26.9%
|
| 4 | Never used | 174 |
52.6%
|