| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 20 | 
                                    
                                    30.3%
                                 | 
| 4000 | 2 | 
                                    
                                    3%
                                 | |
| 5000 | 2 | 
                                    
                                    3%
                                 | |
| 10000 | 2 | 
                                    
                                    3%
                                 | |
| 15000 | 1 | 
                                    
                                    1.5%
                                 | |
| 20000 | 4 | 
                                    
                                    6.1%
                                 | |
| 24000 | 1 | 
                                    
                                    1.5%
                                 | |
| 25000 | 2 | 
                                    
                                    3%
                                 | |
| 30000 | 8 | 
                                    
                                    12.1%
                                 | |
| 35000 | 5 | 
                                    
                                    7.6%
                                 | |
| 40000 | 1 | 
                                    
                                    1.5%
                                 | |
| 45000 | 2 | 
                                    
                                    3%
                                 | |
| 50000 | 3 | 
                                    
                                    4.5%
                                 | |
| 55000 | 1 | 
                                    
                                    1.5%
                                 | |
| 68000 | 1 | 
                                    
                                    1.5%
                                 | |
| 90000 | 3 | 
                                    
                                    4.5%
                                 | |
| 98977 | 1 | 
                                    
                                    1.5%
                                 | |
| 100000 | 3 | 
                                    
                                    4.5%
                                 | |
| 120000 | 1 | 
                                    
                                    1.5%
                                 | |
| 150000 | 2 | 
                                    
                                    3%
                                 | |
| 200000 | 1 | 
                                    
                                    1.5%
                                 | |
| Sysmiss | 45 |