| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 | 
                                    
                                    3.7%
                                 | 
| -8 | Refusal (spontaneous) | 4 | 
                                    
                                    1.9%
                                 | 
| 0 | No payments or gifts are paid | 199 | 
                                    
                                    93%
                                 | 
| 1 | 2 | 
                                    
                                    0.9%
                                 | |
| 3 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 1 |