| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1810 |
7.3%
|
| 2 | Monthly | 3860 |
15.7%
|
| 3 | Yearly | 4362 |
17.7%
|
| 4 | Less often | 9579 |
38.9%
|
| 5 | Not at all | 5039 |
20.4%
|
| Sysmiss | 510 |