| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 6221 |
24.8%
|
| 2 | Monthly | 5583 |
22.3%
|
| 3 | Yearly | 1655 |
6.6%
|
| 4 | Not all | 11586 |
46.3%
|
| Sysmiss | 69 |