| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1327 |
5.4%
|
| 2 | Monthly | 2795 |
11.4%
|
| 3 | Yearly | 2958 |
12%
|
| 4 | Not all | 17508 |
71.2%
|
| Sysmiss | 582 |