| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 | 
                                    
                                    0.5%
                                 | |
| 0 | 71 | 
                                    
                                    36.8%
                                 | |
| 1 | 55 | 
                                    
                                    28.5%
                                 | |
| 2 | 42 | 
                                    
                                    21.8%
                                 | |
| 3 | 23 | 
                                    
                                    11.9%
                                 | |
| 5 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 22 |