| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 | 
                                                                 
                                    
                                    9.8%
                                 
                                                             | 
                                                        
                    
| 0 | 77 | 
                                                                 
                                    
                                    75.5%
                                 
                                                             | 
                                                        
                    |
| 20000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 50000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 70000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 100000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 200000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 350000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 800000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 1700000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 2000000 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 3000000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 5000000 | 3 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    |
| 7000000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 286 |