| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3259 |
14%
|
| 2 | Monthly | 7373 |
31.6%
|
| 3 | Yearly | 3696 |
15.8%
|
| 4 | Not all | 9006 |
38.6%
|
| Sysmiss | 1073 |