| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 838 |
3.5%
|
| 2 | Monthly | 1473 |
6.1%
|
| 3 | Yearly | 1012 |
4.2%
|
| 4 | Not all | 20774 |
86.2%
|
| Sysmiss | 392 |