| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    0.8%
                                 | 
| -7 | Prices are regulated | 2 | 
                                    
                                    0.3%
                                 | 
| -6 | Prices set by HQ | 0 | 
                                    
                                    0%
                                 | 
| 1 | Yes | 139 | 
                                    
                                    23.2%
                                 | 
| 2 | No | 454 | 
                                    
                                    75.7%
                                 |