| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2121 |
8.6%
|
| 2 | Monthly | 3502 |
14.2%
|
| 3 | Yearly | 1945 |
7.9%
|
| 4 | Less often | 3826 |
15.5%
|
| 5 | Not at all | 13256 |
53.8%
|
| Sysmiss | 510 |