| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 39 | 
                                                                 
                                    
                                    6.7%
                                 
                                                             | 
                                                        
                    
| -8 | Refusal (spontaneous) | 16 | 
                                                                 
                                    
                                    2.8%
                                 
                                                             | 
                                                        
                    
| 0 | No payments or gifts are paid | 504 | 
                                                                 
                                    
                                    87%
                                 
                                                             | 
                                                        
                    
| 1 | 10 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| 2 | 6 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 5 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 10 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 13 |