| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Currently using | 4144 |
38.4%
|
| 2 | Used since last brth | 0 |
0%
|
| 3 | Used before last brt | 4525 |
42%
|
| 4 | Never used | 2113 |
19.6%
|