| Value | Category | Cases | |
|---|---|---|---|
| 1 | For a specified period | 8 |
57.1%
|
| 2 | Permanent or until retire | 3 |
21.4%
|
| 3 | Not permanent but without a specified end date | 3 |
21.4%
|
| 4 | For the completion of tasks | 0 |
0%
|
| Sysmiss | 4530 |