| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 815 |
3.3%
|
| 2 | Monthly | 1136 |
4.6%
|
| 3 | Yearly | 1506 |
6.1%
|
| 4 | Not all | 21131 |
85.9%
|
| Sysmiss | 582 |