| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8135 |
33%
|
| 2 | Monthly | 4138 |
16.8%
|
| 3 | Yearly | 1370 |
5.6%
|
| 4 | Less often | 2760 |
11.2%
|
| 5 | Not at all | 8247 |
33.5%
|
| Sysmiss | 510 |