| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Good | 1756 | 1980 | 
                                                                 
                                    
                                    13.1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | know it somehow | 1552 | 1680 | 
                                                                 
                                    
                                    11.1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | fair knowledge | 1542 | 1639 | 
                                                                 
                                    
                                    10.9%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 9 | Don't know | 10227 | 9773 | 
                                                                 
                                    
                                    64.8%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 8 | 3 | 7 |