| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 592 |
2.5%
|
| 2 | Monthly | 6557 |
27.6%
|
| 3 | Yearly | 10244 |
43.1%
|
| 4 | Not all | 6361 |
26.8%
|
| Sysmiss | 1058 |