| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| 0 | 25 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    |
| 4 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 5 | 6 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 6 | 6 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 7 | 4 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 8 | 9 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 10 | 19 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    |
| 12 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 13 | 6 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 14 | 3 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 15 | 9 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 16 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 17 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 18 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 20 | 19 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    |
| 22 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 24 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 25 | 129 | 
                                                                 
                                    
                                    33.2%
                                 
                                                             | 
                                                        
                    |
| 30 | 31 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    |
| 35 | 3 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 40 | 25 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    |
| 45 | 8 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 47 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 50 | 22 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    |
| 51 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 52 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 55 | 5 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 60 | 15 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    |
| 65 | 7 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| 70 | 15 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    |
| 80 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 90 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             |