| Value | Category | Cases | |
|---|---|---|---|
| 1 | Primary or none | 746 | 
                                    
                                    22%
                                 | 
| 2 | Secondary | 1351 | 
                                    
                                    39.8%
                                 | 
| 3 | Higher | 1072 | 
                                    
                                    31.6%
                                 | 
| Sysmiss | 222 | 
                                    
                                    6.5%
                                 |