| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 329 |
1.4%
|
| 2 | Monthly | 708 |
3%
|
| 3 | Yearly | 1772 |
7.6%
|
| 4 | Not all | 20525 |
88%
|
| Sysmiss | 1073 |