| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7545 |
32.3%
|
| 2 | Monthly | 3912 |
16.8%
|
| 3 | Yearly | 1487 |
6.4%
|
| 4 | Not all | 10390 |
44.5%
|
| Sysmiss | 1073 |