| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 448 |
1.8%
|
| 2 | Monthly | 1371 |
5.5%
|
| 3 | Yearly | 6037 |
24.4%
|
| 4 | Less often | 11387 |
46%
|
| 5 | Not at all | 5524 |
22.3%
|
| Sysmiss | 817 |