| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| -7 | Prices are regulated | 4 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    
| -6 | Prices set by HQ | 3 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 47 | 
                                                                 
                                    
                                    12.1%
                                 
                                                             | 
                                                        
                    
| 2 | No | 328 | 
                                                                 
                                    
                                    84.5%
                                 
                                                             |