| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 1-2 production performance indicators | 13 |
5.1%
|
| 2 | 3-9 production performance indicators | 106 |
41.7%
|
| 3 | 10 or more production performance indicators | 135 |
53.1%
|
| Sysmiss | 338 |