| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1243 |
5.2%
|
| 2 | Monthly | 1201 |
5.1%
|
| 3 | Yearly | 883 |
3.7%
|
| 4 | Not all | 20427 |
86%
|
| Sysmiss | 1058 |