| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 382 |
1.6%
|
| 2 | Monthly | 1920 |
8.2%
|
| 3 | Yearly | 1015 |
4.3%
|
| 4 | Not all | 20017 |
85.8%
|
| Sysmiss | 1073 |