| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 | 
                                    
                                    9%
                                 | 
| 0 | 73 | 
                                    
                                    65.8%
                                 | |
| 1 | 4 | 
                                    
                                    3.6%
                                 | |
| 2 | 4 | 
                                    
                                    3.6%
                                 | |
| 3 | 2 | 
                                    
                                    1.8%
                                 | |
| 4 | 2 | 
                                    
                                    1.8%
                                 | |
| 5 | 6 | 
                                    
                                    5.4%
                                 | |
| 8 | 2 | 
                                    
                                    1.8%
                                 | |
| 10 | 1 | 
                                    
                                    0.9%
                                 | |
| 21 | 2 | 
                                    
                                    1.8%
                                 | |
| 22 | 1 | 
                                    
                                    0.9%
                                 | |
| 35 | 1 | 
                                    
                                    0.9%
                                 | |
| 36 | 1 | 
                                    
                                    0.9%
                                 | |
| 45 | 1 | 
                                    
                                    0.9%
                                 | |
| 50 | 1 | 
                                    
                                    0.9%
                                 |