| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 6332 |
26.3%
|
| 2 | Monthly | 5414 |
22.5%
|
| 3 | Yearly | 1583 |
6.6%
|
| 4 | Not all | 10768 |
44.7%
|
| Sysmiss | 392 |