| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 2854 |
12.9%
|
| 2 | used since last brth | 0 |
0%
|
| 3 | used before last brt | 3180 |
14.4%
|
| 4 | never used | 16111 |
72.8%
|