| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.6%
|
| 1 | 1-2 production performance indicators | 59 |
38.6%
|
| 2 | 3-9 production performance indicators | 70 |
45.8%
|
| 3 | 10 or more production performance indicators | 20 |
13.1%
|
| Sysmiss | 576 |