| Value | Category | Cases | |
|---|---|---|---|
| 1 | 12 | 
                                    
                                    60%
                                 | |
| 2 | 6 | 
                                    
                                    30%
                                 | |
| 3 | 1 | 
                                    
                                    5%
                                 | |
| 6 | 1 | 
                                    
                                    5%
                                 | |
| Sysmiss | 1976 |