| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 47 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    
| 1 | 65 | 
                                                                 
                                    
                                    10.7%
                                 
                                                             | 
                                                        
                    |
| 2 | 118 | 
                                                                 
                                    
                                    19.4%
                                 
                                                             | 
                                                        
                    |
| 3 | 78 | 
                                                                 
                                    
                                    12.8%
                                 
                                                             | 
                                                        
                    |
| 4 | 55 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 5 | 37 | 
                                                                 
                                    
                                    6.1%
                                 
                                                             | 
                                                        
                    |
| 6 | 27 | 
                                                                 
                                    
                                    4.4%
                                 
                                                             | 
                                                        
                    |
| 7 | 15 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    |
| 8 | 20 | 
                                                                 
                                    
                                    3.3%
                                 
                                                             | 
                                                        
                    |
| 9 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 10 | 26 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 11 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 12 | 14 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 13 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 14 | 5 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 15 | 16 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 17 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 18 | 4 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 20 | 15 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    |
| 22 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 24 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 25 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 28 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 30 | 8 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 31 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 34 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 35 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 39 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 40 | 10 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 45 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 50 | 4 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 60 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 62 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 70 | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 75 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 80 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 90 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 100 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 130 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 150 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 160 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 200 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 300 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 350 | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |