| Value | Category | Cases | |
|---|---|---|---|
| 0 | Pre-basic or none | 566 | 
                                    
                                    10.3%
                                 | 
| 1 | Basic | 4149 | 
                                    
                                    75.7%
                                 | 
| 2 | Secondary | 603 | 
                                    
                                    11%
                                 | 
| 3 | Higher | 42 | 
                                    
                                    0.8%
                                 | 
| Sysmiss | 119 | 
                                    
                                    2.2%
                                 |