| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 680 |
2.8%
|
| 2 | Monthly | 2113 |
8.6%
|
| 3 | Yearly | 5375 |
21.8%
|
| 4 | Less often | 5180 |
21%
|
| 5 | Not at all | 11302 |
45.8%
|
| Sysmiss | 510 |