| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Never | 10515 |
72.9%
|
| 1 | Daily | 3014 |
20.9%
|
| 2 | Weekly | 598 |
4.1%
|
| 3 | Monthly | 89 |
0.6%
|
| 4 | Less than monthly | 204 |
1.4%
|
| 9 | 4 |
0%
|