| Value | Category | Cases | |
|---|---|---|---|
| 1 | 147 | 
                                    
                                    4.4%
                                 | |
| 3 | 3174 | 
                                    
                                    94.4%
                                 | |
| 8 | 42 | 
                                    
                                    1.2%
                                 | |
| Sysmiss | 171 |