| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Currently using | 251 |
21.9%
|
| 2 | Used since last brth | 0 |
0%
|
| 3 | Used before last brt | 304 |
26.6%
|
| 4 | Never used | 590 |
51.5%
|