| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 141 | 
                                    
                                    1.7%
                                 | 
| 2 | NO | 94 | 
                                    
                                    1.1%
                                 | 
| Sysmiss | 7982 | 
                                    
                                    97.1%
                                 |