| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1280 |
5.5%
|
| 2 | Monthly | 5969 |
25.6%
|
| 3 | Yearly | 4385 |
18.8%
|
| 4 | Not all | 11700 |
50.1%
|
| Sysmiss | 1073 |