| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| -7 | Prices are regulated | 31 | 
                                    
                                    7.7%
                                 | 
| -6 | Prices set by HQ | 28 | 
                                    
                                    7%
                                 | 
| 1 | Yes | 55 | 
                                    
                                    13.7%
                                 | 
| 2 | No | 288 | 
                                    
                                    71.6%
                                 |