| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    0.4%
                                 | 
| -7 | Prices are regulated | 434 | 
                                    
                                    30.6%
                                 | 
| -6 | Prices set by HQ | 57 | 
                                    
                                    4%
                                 | 
| 1 | Yes | 314 | 
                                    
                                    22.2%
                                 | 
| 2 | No | 606 | 
                                    
                                    42.8%
                                 |