| Value | Category | Cases | |
|---|---|---|---|
| 1 | 900 | 
                                    
                                    97.4%
                                 | |
| 6 | 2 | 
                                    
                                    0.2%
                                 | |
| 7 | 2 | 
                                    
                                    0.2%
                                 | |
| 8 | 1 | 
                                    
                                    0.1%
                                 | |
| 9 | 19 | 
                                    
                                    2.1%
                                 | |
| Sysmiss | 40 |