| Value | Category | Cases | |
|---|---|---|---|
| 6 | 23 | 
                                    
                                    5.8%
                                 | |
| 7 | 47 | 
                                    
                                    11.8%
                                 | |
| 8 | 325 | 
                                    
                                    81.5%
                                 | |
| 12 | 4 | 
                                    
                                    1%
                                 | |
| Sysmiss | 1 |