| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 910 |
3.7%
|
| 2 | Monthly | 8252 |
33.3%
|
| 3 | Yearly | 1979 |
8%
|
| 4 | Less often | 3467 |
14%
|
| 5 | Not at all | 10159 |
41%
|
| Sysmiss | 817 |