| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1160 |
4.8%
|
| 2 | Monthly | 909 |
3.8%
|
| 3 | Yearly | 1248 |
5.2%
|
| 4 | Not all | 20780 |
86.2%
|
| Sysmiss | 392 |