| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2605 |
10.6%
|
| 2 | Monthly | 1026 |
4.2%
|
| 3 | Yearly | 1264 |
5.1%
|
| 4 | Not all | 19731 |
80.1%
|
| Sysmiss | 534 |