| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 | 
                                    
                                    3.8%
                                 | 
| -5 | Refund still outstanding | 9 | 
                                    
                                    17.3%
                                 | 
| 1 | One week or less | 7 | 
                                    
                                    13.5%
                                 | 
| 2 | 7 | 
                                    
                                    13.5%
                                 | |
| 3 | 4 | 
                                    
                                    7.7%
                                 | |
| 4 | 4 | 
                                    
                                    7.7%
                                 | |
| 6 | 1 | 
                                    
                                    1.9%
                                 | |
| 8 | 2 | 
                                    
                                    3.8%
                                 | |
| 9 | 1 | 
                                    
                                    1.9%
                                 | |
| 12 | 2 | 
                                    
                                    3.8%
                                 | |
| 14 | 1 | 
                                    
                                    1.9%
                                 | |
| 15 | 1 | 
                                    
                                    1.9%
                                 | |
| 16 | 1 | 
                                    
                                    1.9%
                                 | |
| 20 | 2 | 
                                    
                                    3.8%
                                 | |
| 24 | 3 | 
                                    
                                    5.8%
                                 | |
| 30 | 1 | 
                                    
                                    1.9%
                                 | |
| 31 | 1 | 
                                    
                                    1.9%
                                 | |
| 60 | 1 | 
                                    
                                    1.9%
                                 | |
| 70 | 1 | 
                                    
                                    1.9%
                                 | |
| 90 | 1 | 
                                    
                                    1.9%
                                 | |
| Sysmiss | 59 |