| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 | 
                                    
                                    2%
                                 | 
| 0 | 93 | 
                                    
                                    62%
                                 | |
| 1 | 22 | 
                                    
                                    14.7%
                                 | |
| 2 | 9 | 
                                    
                                    6%
                                 | |
| 3 | 2 | 
                                    
                                    1.3%
                                 | |
| 4 | 3 | 
                                    
                                    2%
                                 | |
| 5 | 6 | 
                                    
                                    4%
                                 | |
| 6 | 1 | 
                                    
                                    0.7%
                                 | |
| 10 | 3 | 
                                    
                                    2%
                                 | |
| 11 | 1 | 
                                    
                                    0.7%
                                 | |
| 12 | 1 | 
                                    
                                    0.7%
                                 | |
| 13 | 1 | 
                                    
                                    0.7%
                                 | |
| 15 | 1 | 
                                    
                                    0.7%
                                 | |
| 25 | 1 | 
                                    
                                    0.7%
                                 | |
| 28 | 1 | 
                                    
                                    0.7%
                                 | |
| 76 | 1 | 
                                    
                                    0.7%
                                 | |
| 90 | 1 | 
                                    
                                    0.7%
                                 |