| Value | Category | Cases | |
|---|---|---|---|
| -999999 | 766 | 
                                    
                                    17.3%
                                 | |
| 98 | Autre, préciser | 818 | 
                                    
                                    18.5%
                                 | 
| Sysmiss | 2843 | 
                                    
                                    64.2%
                                 |