| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1087 |
4.5%
|
| 2 | Monthly | 1145 |
4.8%
|
| 3 | Yearly | 870 |
3.6%
|
| 4 | Not all | 20995 |
87.1%
|
| Sysmiss | 392 |