| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 0 | 303 | 
                                    
                                    83.5%
                                 | |
| 5 | 2 | 
                                    
                                    0.6%
                                 | |
| 10 | 1 | 
                                    
                                    0.3%
                                 | |
| 30 | 1 | 
                                    
                                    0.3%
                                 | |
| 40 | 1 | 
                                    
                                    0.3%
                                 | |
| 50 | 3 | 
                                    
                                    0.8%
                                 | |
| 100 | 52 | 
                                    
                                    14.3%
                                 |