| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3657 |
14.6%
|
| 2 | Monthly | 7526 |
30%
|
| 3 | Yearly | 4224 |
16.9%
|
| 4 | Not all | 9638 |
38.5%
|
| Sysmiss | 69 |