| Value | Category | Cases | |
|---|---|---|---|
| 1 | 21 | 
                                    
                                    10.7%
                                 | |
| 2 | 173 | 
                                    
                                    87.8%
                                 | |
| 8 | 3 | 
                                    
                                    1.5%
                                 | |
| Missing value | 90 |