| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    0.6%
                                 | 
| -7 | Not VAT eligible | 4 | 
                                    
                                    2.5%
                                 | 
| -6 | VAT refund not available | 12 | 
                                    
                                    7.6%
                                 | 
| 1 | Yes | 0 | 
                                    
                                    0%
                                 | 
| 2 | No | 140 | 
                                    
                                    89.2%
                                 |