| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| -7 | Prices are regulated | 59 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| -6 | Prices set by HQ | 60 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 191 | 
                                                                 
                                    
                                    15.7%
                                 
                                                             | 
                                                        
                    
| 2 | No | 898 | 
                                                                 
                                    
                                    73.8%
                                 
                                                             |