| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 28 | 
                                    
                                    51.9%
                                 | 
| -7 | Does not apply (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 0 | 3 | 
                                    
                                    5.6%
                                 | |
| 10 | 1 | 
                                    
                                    1.9%
                                 | |
| 100 | 1 | 
                                    
                                    1.9%
                                 | |
| 300 | 1 | 
                                    
                                    1.9%
                                 | |
| 500 | 2 | 
                                    
                                    3.7%
                                 | |
| 800 | 2 | 
                                    
                                    3.7%
                                 | |
| 1000 | 3 | 
                                    
                                    5.6%
                                 | |
| 1500 | 3 | 
                                    
                                    5.6%
                                 | |
| 2000 | 2 | 
                                    
                                    3.7%
                                 | |
| 2400 | 1 | 
                                    
                                    1.9%
                                 | |
| 3400 | 1 | 
                                    
                                    1.9%
                                 | |
| 3500 | 1 | 
                                    
                                    1.9%
                                 | |
| 4500 | 1 | 
                                    
                                    1.9%
                                 | |
| 5000 | 3 | 
                                    
                                    5.6%
                                 | |
| 6000 | 1 | 
                                    
                                    1.9%
                                 | |
| Sysmiss | 43 |