| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    0.5%
                                 | 
| 0 | 153 | 
                                    
                                    71.2%
                                 | |
| 1 | 10 | 
                                    
                                    4.7%
                                 | |
| 2 | 11 | 
                                    
                                    5.1%
                                 | |
| 3 | 3 | 
                                    
                                    1.4%
                                 | |
| 4 | 3 | 
                                    
                                    1.4%
                                 | |
| 5 | 10 | 
                                    
                                    4.7%
                                 | |
| 6 | 1 | 
                                    
                                    0.5%
                                 | |
| 7 | 2 | 
                                    
                                    0.9%
                                 | |
| 9 | 1 | 
                                    
                                    0.5%
                                 | |
| 10 | 3 | 
                                    
                                    1.4%
                                 | |
| 12 | 1 | 
                                    
                                    0.5%
                                 | |
| 14 | 1 | 
                                    
                                    0.5%
                                 | |
| 15 | 4 | 
                                    
                                    1.9%
                                 | |
| 20 | 2 | 
                                    
                                    0.9%
                                 | |
| 25 | 1 | 
                                    
                                    0.5%
                                 | |
| 40 | 2 | 
                                    
                                    0.9%
                                 | |
| 60 | 1 | 
                                    
                                    0.5%
                                 | |
| 70 | 1 | 
                                    
                                    0.5%
                                 | |
| 78 | 1 | 
                                    
                                    0.5%
                                 | |
| 200 | 2 | 
                                    
                                    0.9%
                                 | |
| 250 | 1 | 
                                    
                                    0.5%
                                 |