| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    3.4%
                                 | 
| -8 | Refusal (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 1 | Only quantity per unit of output targets | 4 | 
                                    
                                    13.8%
                                 | 
| 2 | Only absolute quantity targets | 5 | 
                                    
                                    17.2%
                                 | 
| 3 | Absolute and per unit of output quantity targets | 19 | 
                                    
                                    65.5%
                                 | 
| Sysmiss | 926 |