| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 9590 | 
                                    
                                    31.8%
                                 | 
| 2 | NO | 513 | 
                                    
                                    1.7%
                                 | 
| Sysmiss | 20058 | 
                                    
                                    66.5%
                                 |