| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1670 |
6.9%
|
| 2 | Monthly | 7617 |
31.6%
|
| 3 | Yearly | 3347 |
13.9%
|
| 4 | Not all | 11463 |
47.6%
|
| Sysmiss | 392 |