| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1799 |
7.3%
|
| 2 | Monthly | 7054 |
28.7%
|
| 3 | Yearly | 3727 |
15.2%
|
| 4 | Less often | 5991 |
24.4%
|
| 5 | Not at all | 6021 |
24.5%
|
| Sysmiss | 516 |