| Value | Category | Cases | |
|---|---|---|---|
| 1 | 999 | 
                                    
                                    85.5%
                                 | |
| 3 | 35 | 
                                    
                                    3%
                                 | |
| 8 | 14 | 
                                    
                                    1.2%
                                 | |
| 9 | 120 | 
                                    
                                    10.3%
                                 | |
| Sysmiss | 4 |