| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 3775 | 
                                    
                                    91.6%
                                 | 
| 2 | NO | 183 | 
                                    
                                    4.4%
                                 | 
| Sysmiss | 164 | 
                                    
                                    4%
                                 |