| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | never | 3289 |
70%
|
| 1 | yes, last 12 months | 1355 |
28.8%
|
| 2 | yes, before last 12 months | 53 |
1.1%
|
| 3 | yes, can't establish when | 0 |
0%
|