| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 810 |
3.3%
|
| 2 | Monthly | 2898 |
11.8%
|
| 3 | Yearly | 7635 |
31.1%
|
| 4 | Not all | 13245 |
53.9%
|
| Sysmiss | 582 |