| Value | Category | Cases | |
|---|---|---|---|
| 1 | None or Basic | 20010 | 
                                    
                                    42.8%
                                 | 
| 2 | Secondary | 13462 | 
                                    
                                    28.8%
                                 | 
| 3 | Higher | 13196 | 
                                    
                                    28.2%
                                 | 
| 9 | Missing/DK | 61 | 
                                    
                                    0.1%
                                 |