| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 0 | 102 | 
                                                                 
                                    
                                    37.2%
                                 
                                                             | 
                                                        
                    |
| 1 | 34 | 
                                                                 
                                    
                                    12.4%
                                 
                                                             | 
                                                        
                    |
| 2 | 42 | 
                                                                 
                                    
                                    15.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 21 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    |
| 4 | 16 | 
                                                                 
                                    
                                    5.8%
                                 
                                                             | 
                                                        
                    |
| 5 | 15 | 
                                                                 
                                    
                                    5.5%
                                 
                                                             | 
                                                        
                    |
| 6 | 3 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 7 | 3 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 8 | 2 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 9 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 10 | 10 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             | 
                                                        
                    |
| 12 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 13 | 5 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| 15 | 2 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 17 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 18 | 3 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 20 | 3 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 23 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 35 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 46 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 50 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 55 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 100 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 150 | 1 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 318 |