| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                                                 
                                    
                                    20%
                                 
                                                             | 
                                                        
                    
| -5 | Refund still outstanding | 5 | 
                                                                 
                                    
                                    20%
                                 
                                                             | 
                                                        
                    
| 1 | One week or less | 2 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    
| 4 | 9 | 
                                                                 
                                    
                                    36%
                                 
                                                             | 
                                                        
                    |
| 6 | 1 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 8 | 2 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    |
| 12 | 1 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 339 |