| Value | Category | Cases | |
|---|---|---|---|
| 0 | 566 | 
                                                                 
                                    
                                    92.8%
                                 
                                                             | 
                                                        
                    |
| 1 | 44 | 
                                                                 
                                    
                                    7.2%
                                 
                                                             | 
                                                        
                    |
| -99 | 11 | ||
| Sysmiss | 36 |