| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 8110 |
38.3%
|
| 2 | Weekly | 6576 |
31%
|
| 3 | Monthly | 1684 |
7.9%
|
| 4 | Yearly | 210 |
1%
|
| 5 | Not at all | 4606 |
21.7%
|
| Sysmiss | 3974 |