| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 | 
                                    
                                    7.2%
                                 | 
| 1 | 72 | 
                                    
                                    74.2%
                                 | |
| 2 | 14 | 
                                    
                                    14.4%
                                 | |
| 3 | 3 | 
                                    
                                    3.1%
                                 | |
| 5 | 1 | 
                                    
                                    1%
                                 |