| Value | Category | Cases | |
|---|---|---|---|
| 1 | For a specified period | 1 |
33.3%
|
| 2 | Permanent or until retire | 2 |
66.7%
|
| 3 | Not permanent but without a specified end date | 0 |
0%
|
| 4 | For the completion of tasks | 0 |
0%
|
| Sysmiss | 4541 |