| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 5619 | 
                                    
                                    68.4%
                                 | 
| 2 | NO | 1883 | 
                                    
                                    22.9%
                                 | 
| Sysmiss | 715 | 
                                    
                                    8.7%
                                 |