| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| -7 | Prices are regulated | 38 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    
| -6 | Prices set by HQ | 13 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 64 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    
| 2 | No | 476 | 
                                                                 
                                    
                                    80.4%
                                 
                                                             |