| Value | Category | Cases | |
|---|---|---|---|
| 1 | 595 | 
                                    
                                    96.4%
                                 | |
| 3 | 20 | 
                                    
                                    3.2%
                                 | |
| 9 | 2 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 1 |