| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| 0 | 45 | 
                                                                 
                                    
                                    12%
                                 
                                                             | 
                                                        
                    |
| 1 | 17 | 
                                                                 
                                    
                                    4.5%
                                 
                                                             | 
                                                        
                    |
| 2 | 59 | 
                                                                 
                                    
                                    15.7%
                                 
                                                             | 
                                                        
                    |
| 3 | 34 | 
                                                                 
                                    
                                    9.1%
                                 
                                                             | 
                                                        
                    |
| 4 | 31 | 
                                                                 
                                    
                                    8.3%
                                 
                                                             | 
                                                        
                    |
| 5 | 37 | 
                                                                 
                                    
                                    9.9%
                                 
                                                             | 
                                                        
                    |
| 6 | 15 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 7 | 7 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 8 | 7 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 9 | 7 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 10 | 34 | 
                                                                 
                                    
                                    9.1%
                                 
                                                             | 
                                                        
                    |
| 11 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 12 | 4 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 13 | 3 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 14 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 15 | 5 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 17 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 18 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 19 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 20 | 16 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 25 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 30 | 7 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 35 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 40 | 4 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 45 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 46 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 50 | 4 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 60 | 4 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 100 | 4 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 120 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 200 | 2 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 250 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 500 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 550 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             |