| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 42 | 
                                    
                                    19.5%
                                 | 
| 1 | 9 | 
                                    
                                    4.2%
                                 | |
| 2 | 23 | 
                                    
                                    10.7%
                                 | |
| 3 | 22 | 
                                    
                                    10.2%
                                 | |
| 4 | 11 | 
                                    
                                    5.1%
                                 | |
| 5 | 31 | 
                                    
                                    14.4%
                                 | |
| 6 | 15 | 
                                    
                                    7%
                                 | |
| 7 | 7 | 
                                    
                                    3.3%
                                 | |
| 8 | 10 | 
                                    
                                    4.7%
                                 | |
| 9 | 3 | 
                                    
                                    1.4%
                                 | |
| 10 | 4 | 
                                    
                                    1.9%
                                 | |
| 11 | 1 | 
                                    
                                    0.5%
                                 | |
| 12 | 5 | 
                                    
                                    2.3%
                                 | |
| 14 | 1 | 
                                    
                                    0.5%
                                 | |
| 15 | 4 | 
                                    
                                    1.9%
                                 | |
| 16 | 1 | 
                                    
                                    0.5%
                                 | |
| 17 | 2 | 
                                    
                                    0.9%
                                 | |
| 18 | 1 | 
                                    
                                    0.5%
                                 | |
| 20 | 4 | 
                                    
                                    1.9%
                                 | |
| 21 | 1 | 
                                    
                                    0.5%
                                 | |
| 25 | 2 | 
                                    
                                    0.9%
                                 | |
| 28 | 1 | 
                                    
                                    0.5%
                                 | |
| 30 | 6 | 
                                    
                                    2.8%
                                 | |
| 32 | 1 | 
                                    
                                    0.5%
                                 | |
| 33 | 1 | 
                                    
                                    0.5%
                                 | |
| 36 | 1 | 
                                    
                                    0.5%
                                 | |
| 40 | 1 | 
                                    
                                    0.5%
                                 | |
| 43 | 1 | 
                                    
                                    0.5%
                                 | |
| 53 | 1 | 
                                    
                                    0.5%
                                 | |
| 100 | 1 | 
                                    
                                    0.5%
                                 | |
| 120 | 1 | 
                                    
                                    0.5%
                                 | |
| 150 | 1 | 
                                    
                                    0.5%
                                 |