| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 5 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 30 | 2 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 40 | 10 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    |
| 50 | 21 | 
                                                                 
                                    
                                    13.5%
                                 
                                                             | 
                                                        
                    |
| 55 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 60 | 30 | 
                                                                 
                                    
                                    19.2%
                                 
                                                             | 
                                                        
                    |
| 65 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 67 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 70 | 14 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 80 | 16 | 
                                                                 
                                    
                                    10.3%
                                 
                                                             | 
                                                        
                    |
| 90 | 14 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 95 | 3 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 98 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 100 | 41 | 
                                                                 
                                    
                                    26.3%
                                 
                                                             |