| Value | Category | Cases | |
|---|---|---|---|
| 1 | Routine-manual | 75 |
16.2%
|
| 2 | Routine-mechanized | 115 |
24.8%
|
| 3 | Regular-manual | 87 |
18.8%
|
| 4 | Regular-mechanized | 111 |
23.9%
|
| 8 | Other | 76 |
16.4%
|
| Sysmiss | 1071 |