| Value | Category | Cases | |
|---|---|---|---|
| 6 | 22 | 
                                    
                                    5.5%
                                 | |
| 7 | 46 | 
                                    
                                    11.6%
                                 | |
| 8 | 327 | 
                                    
                                    82.2%
                                 | |
| 12 | 3 | 
                                    
                                    0.8%
                                 | |
| Sysmiss | 2 |