| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1624 |
6.6%
|
| 2 | Monthly | 4897 |
19.9%
|
| 3 | Yearly | 1463 |
5.9%
|
| 4 | Less often | 3489 |
14.2%
|
| 5 | Not at all | 13177 |
53.5%
|
| Sysmiss | 510 |