| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    3.4%
                                 | 
| 0 | 4 | 
                                    
                                    13.8%
                                 | |
| 840 | 1 | 
                                    
                                    3.4%
                                 | |
| 1960 | 1 | 
                                    
                                    3.4%
                                 | |
| 2000 | 1 | 
                                    
                                    3.4%
                                 | |
| 5528 | 1 | 
                                    
                                    3.4%
                                 | |
| 6000 | 1 | 
                                    
                                    3.4%
                                 | |
| 10000 | 1 | 
                                    
                                    3.4%
                                 | |
| 30000 | 1 | 
                                    
                                    3.4%
                                 | |
| 32000 | 1 | 
                                    
                                    3.4%
                                 | |
| 33000 | 1 | 
                                    
                                    3.4%
                                 | |
| 50000 | 2 | 
                                    
                                    6.9%
                                 | |
| 60000 | 3 | 
                                    
                                    10.3%
                                 | |
| 72000 | 1 | 
                                    
                                    3.4%
                                 | |
| 93000 | 1 | 
                                    
                                    3.4%
                                 | |
| 100000 | 1 | 
                                    
                                    3.4%
                                 | |
| 150000 | 1 | 
                                    
                                    3.4%
                                 | |
| 320000 | 1 | 
                                    
                                    3.4%
                                 | |
| 400000 | 1 | 
                                    
                                    3.4%
                                 | |
| 600000 | 2 | 
                                    
                                    6.9%
                                 | |
| 750000 | 1 | 
                                    
                                    3.4%
                                 | |
| 2100000 | 1 | 
                                    
                                    3.4%
                                 | |
| Sysmiss | 373 |