| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 1 | 1-2 production performance indicators | 26 | 
                                    
                                    11.1%
                                 | 
| 2 | 3-9 production performance indicators | 137 | 
                                    
                                    58.3%
                                 | 
| 3 | 10 or more production performance indicators | 72 | 
                                    
                                    30.6%
                                 | 
| Sysmiss | 167 |