| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 0 | 36 | 
                                    
                                    9.9%
                                 | |
| 1 | 41 | 
                                    
                                    11.3%
                                 | |
| 2 | 94 | 
                                    
                                    25.9%
                                 | |
| 3 | 51 | 
                                    
                                    14%
                                 | |
| 4 | 34 | 
                                    
                                    9.4%
                                 | |
| 5 | 28 | 
                                    
                                    7.7%
                                 | |
| 6 | 13 | 
                                    
                                    3.6%
                                 | |
| 7 | 6 | 
                                    
                                    1.7%
                                 | |
| 8 | 6 | 
                                    
                                    1.7%
                                 | |
| 9 | 2 | 
                                    
                                    0.6%
                                 | |
| 10 | 15 | 
                                    
                                    4.1%
                                 | |
| 11 | 1 | 
                                    
                                    0.3%
                                 | |
| 12 | 1 | 
                                    
                                    0.3%
                                 | |
| 13 | 2 | 
                                    
                                    0.6%
                                 | |
| 14 | 2 | 
                                    
                                    0.6%
                                 | |
| 15 | 7 | 
                                    
                                    1.9%
                                 | |
| 18 | 1 | 
                                    
                                    0.3%
                                 | |
| 20 | 6 | 
                                    
                                    1.7%
                                 | |
| 21 | 1 | 
                                    
                                    0.3%
                                 | |
| 22 | 1 | 
                                    
                                    0.3%
                                 | |
| 23 | 1 | 
                                    
                                    0.3%
                                 | |
| 25 | 1 | 
                                    
                                    0.3%
                                 | |
| 29 | 1 | 
                                    
                                    0.3%
                                 | |
| 30 | 5 | 
                                    
                                    1.4%
                                 | |
| 33 | 1 | 
                                    
                                    0.3%
                                 | |
| 45 | 2 | 
                                    
                                    0.6%
                                 | |
| 80 | 2 | 
                                    
                                    0.6%
                                 | |
| 84 | 1 | 
                                    
                                    0.3%
                                 | |
| 90 | 1 | 
                                    
                                    0.3%
                                 |