| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 | 
                                    
                                    0.9%
                                 | 
| 0 | 175 | 
                                    
                                    81.4%
                                 | |
| 5 | 1 | 
                                    
                                    0.5%
                                 | |
| 30 | 1 | 
                                    
                                    0.5%
                                 | |
| 35 | 1 | 
                                    
                                    0.5%
                                 | |
| 50 | 4 | 
                                    
                                    1.9%
                                 | |
| 60 | 2 | 
                                    
                                    0.9%
                                 | |
| 65 | 2 | 
                                    
                                    0.9%
                                 | |
| 80 | 1 | 
                                    
                                    0.5%
                                 | |
| 99 | 1 | 
                                    
                                    0.5%
                                 | |
| 100 | 25 | 
                                    
                                    11.6%
                                 |