| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 6281 |
26.9%
|
| 2 | Monthly | 3986 |
17.1%
|
| 3 | Yearly | 1522 |
6.5%
|
| 4 | Not all | 11545 |
49.5%
|
| Sysmiss | 1073 |