| Value | Category | Cases | |
|---|---|---|---|
| 0 | no education | 1115 | 
                                                                 
                                    
                                    13.5%
                                 
                                                             | 
                                                        
                    
| 1 | primary | 3638 | 
                                                                 
                                    
                                    44.2%
                                 
                                                             | 
                                                        
                    
| 2 | secondary | 3001 | 
                                                                 
                                    
                                    36.5%
                                 
                                                             | 
                                                        
                    
| 3 | higher | 371 | 
                                                                 
                                    
                                    4.5%
                                 
                                                             | 
                                                        
                    
| 8 | don't know | 95 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 9 | 9 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 3 |