| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1080 |
4.6%
|
| 2 | Monthly | 870 |
3.7%
|
| 3 | Yearly | 1073 |
4.6%
|
| 4 | Not all | 20311 |
87%
|
| Sysmiss | 1073 |