| Value | Category | Cases | |
|---|---|---|---|
| 0 | pre-primary | 2 | 
                                    
                                    10.5%
                                 | 
| 1 | primary | 17 | 
                                    
                                    89.5%
                                 | 
| 2 | secondary lower | 0 | 
                                    
                                    0%
                                 | 
| 3 | secondary upper | 0 | 
                                    
                                    0%
                                 | 
| 4 | higher | 0 | 
                                    
                                    0%
                                 | 
| 8 | dk | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15332 |