| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    
| 0 | 18 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    |
| 1 | 3 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 2 | 3 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 4 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 5 | 3 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 10 | 11 | 
                                                                 
                                    
                                    4.7%
                                 
                                                             | 
                                                        
                    |
| 15 | 3 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 18 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 20 | 8 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    |
| 25 | 3 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 30 | 7 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 35 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 40 | 8 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    |
| 45 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 50 | 17 | 
                                                                 
                                    
                                    7.3%
                                 
                                                             | 
                                                        
                    |
| 60 | 10 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 65 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 70 | 13 | 
                                                                 
                                    
                                    5.6%
                                 
                                                             | 
                                                        
                    |
| 75 | 7 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 80 | 16 | 
                                                                 
                                    
                                    6.9%
                                 
                                                             | 
                                                        
                    |
| 90 | 11 | 
                                                                 
                                    
                                    4.7%
                                 
                                                             | 
                                                        
                    |
| 95 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 98 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 99 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 100 | 75 | 
                                                                 
                                    
                                    32.2%
                                 
                                                             |