| Value | Category | Cases | |
|---|---|---|---|
| 0 | none | 2997 | 
                                    
                                    20.1%
                                 | 
| 1 | primary incomplete (< 7) | 4227 | 
                                    
                                    28.3%
                                 | 
| 2 | primary complete/secy inc (7-11) | 6394 | 
                                    
                                    42.8%
                                 | 
| 3 | secy complete/higher (12+) | 1328 | 
                                    
                                    8.9%
                                 |