| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 1219 |
33.8%
|
| 2 | used in last 12 months | 0 |
0%
|
| 3 | ever used | 418 |
11.6%
|
| 4 | never used | 1968 |
54.6%
|