| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    0.6%
                                 | 
| 0 | 19 | 
                                    
                                    10.7%
                                 | |
| 1 | 20 | 
                                    
                                    11.2%
                                 | |
| 2 | 24 | 
                                    
                                    13.5%
                                 | |
| 3 | 22 | 
                                    
                                    12.4%
                                 | |
| 4 | 13 | 
                                    
                                    7.3%
                                 | |
| 5 | 14 | 
                                    
                                    7.9%
                                 | |
| 6 | 12 | 
                                    
                                    6.7%
                                 | |
| 7 | 4 | 
                                    
                                    2.2%
                                 | |
| 8 | 4 | 
                                    
                                    2.2%
                                 | |
| 9 | 2 | 
                                    
                                    1.1%
                                 | |
| 10 | 4 | 
                                    
                                    2.2%
                                 | |
| 11 | 2 | 
                                    
                                    1.1%
                                 | |
| 12 | 3 | 
                                    
                                    1.7%
                                 | |
| 13 | 1 | 
                                    
                                    0.6%
                                 | |
| 14 | 4 | 
                                    
                                    2.2%
                                 | |
| 16 | 2 | 
                                    
                                    1.1%
                                 | |
| 17 | 2 | 
                                    
                                    1.1%
                                 | |
| 19 | 2 | 
                                    
                                    1.1%
                                 | |
| 20 | 1 | 
                                    
                                    0.6%
                                 | |
| 21 | 2 | 
                                    
                                    1.1%
                                 | |
| 25 | 4 | 
                                    
                                    2.2%
                                 | |
| 27 | 1 | 
                                    
                                    0.6%
                                 | |
| 30 | 3 | 
                                    
                                    1.7%
                                 | |
| 32 | 1 | 
                                    
                                    0.6%
                                 | |
| 34 | 1 | 
                                    
                                    0.6%
                                 | |
| 37 | 1 | 
                                    
                                    0.6%
                                 | |
| 40 | 1 | 
                                    
                                    0.6%
                                 | |
| 42 | 1 | 
                                    
                                    0.6%
                                 | |
| 43 | 1 | 
                                    
                                    0.6%
                                 | |
| 45 | 1 | 
                                    
                                    0.6%
                                 | |
| 50 | 2 | 
                                    
                                    1.1%
                                 | |
| 55 | 1 | 
                                    
                                    0.6%
                                 | |
| 100 | 2 | 
                                    
                                    1.1%
                                 | |
| Sysmiss | 133 |