| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 46 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    
| 0 | 486 | 
                                                                 
                                    
                                    83.6%
                                 
                                                             | 
                                                        
                    |
| 1 | 40 | 
                                                                 
                                    
                                    6.9%
                                 
                                                             | 
                                                        
                    |
| 3 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 25 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 250 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 322 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 2000 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 3000 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 36000 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 95000000 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |