| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 762 |
3.1%
|
| 2 | Monthly | 1991 |
8.1%
|
| 3 | Yearly | 3697 |
15%
|
| 4 | Less often | 6608 |
26.8%
|
| 5 | Not at all | 11592 |
47%
|
| Sysmiss | 510 |