| Value | Category | Cases | |
|---|---|---|---|
| 1 | For a specified period | 325 |
39.4%
|
| 2 | Permanent or until retire | 150 |
18.2%
|
| 3 | Not permanent but without a specified end date | 238 |
28.8%
|
| 4 | For the completion of tasks | 112 |
13.6%
|
| Sysmiss | 3719 |