| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    
| 0 | 124 | 
                                                                 
                                    
                                    85.5%
                                 
                                                             | 
                                                        
                    |
| 1 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 5 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 10 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 20 | 3 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 25 | 3 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 30 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 35 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 50 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             |