| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| 2 | 13 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 3 | 27 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    |
| 4 | 22 | 
                                                                 
                                    
                                    6.9%
                                 
                                                             | 
                                                        
                    |
| 5 | 38 | 
                                                                 
                                    
                                    11.8%
                                 
                                                             | 
                                                        
                    |
| 6 | 19 | 
                                                                 
                                    
                                    5.9%
                                 
                                                             | 
                                                        
                    |
| 7 | 10 | 
                                                                 
                                    
                                    3.1%
                                 
                                                             | 
                                                        
                    |
| 8 | 26 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    |
| 9 | 4 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 10 | 40 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 12 | 24 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 13 | 2 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 14 | 8 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    |
| 15 | 24 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 16 | 15 | 
                                                                 
                                    
                                    4.7%
                                 
                                                             | 
                                                        
                    |
| 17 | 2 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 18 | 6 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 20 | 8 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    |
| 21 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 23 | 3 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 24 | 2 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 25 | 6 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 30 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 60 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 90 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 100 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 43 |