| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 98 | 
                                    
                                    46.2%
                                 | 
| -5 | Refund still outstanding | 1 | 
                                    
                                    0.5%
                                 | 
| 1 | One week or less | 27 | 
                                    
                                    12.7%
                                 | 
| 2 | 18 | 
                                    
                                    8.5%
                                 | |
| 3 | 28 | 
                                    
                                    13.2%
                                 | |
| 4 | 22 | 
                                    
                                    10.4%
                                 | |
| 6 | 8 | 
                                    
                                    3.8%
                                 | |
| 7 | 2 | 
                                    
                                    0.9%
                                 | |
| 8 | 4 | 
                                    
                                    1.9%
                                 | |
| 10 | 1 | 
                                    
                                    0.5%
                                 | |
| 12 | 1 | 
                                    
                                    0.5%
                                 | |
| 13 | 1 | 
                                    
                                    0.5%
                                 | |
| 14 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 388 |