| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 | 
                                    
                                    7.2%
                                 | 
| -7 | Prices are regulated | 28 | 
                                    
                                    25.2%
                                 | 
| -6 | Prices set by HQ | 3 | 
                                    
                                    2.7%
                                 | 
| 1 | Yes | 18 | 
                                    
                                    16.2%
                                 | 
| 2 | No | 54 | 
                                    
                                    48.6%
                                 |