| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 | 
                                    
                                    13%
                                 | 
| 0 | 4 | 
                                    
                                    17.4%
                                 | |
| 35 | 1 | 
                                    
                                    4.3%
                                 | |
| 150 | 1 | 
                                    
                                    4.3%
                                 | |
| 200 | 1 | 
                                    
                                    4.3%
                                 | |
| 220 | 1 | 
                                    
                                    4.3%
                                 | |
| 230 | 1 | 
                                    
                                    4.3%
                                 | |
| 300 | 1 | 
                                    
                                    4.3%
                                 | |
| 600 | 1 | 
                                    
                                    4.3%
                                 | |
| 1000 | 1 | 
                                    
                                    4.3%
                                 | |
| 1600 | 1 | 
                                    
                                    4.3%
                                 | |
| 2400 | 1 | 
                                    
                                    4.3%
                                 | |
| 3000 | 1 | 
                                    
                                    4.3%
                                 | |
| 5000 | 1 | 
                                    
                                    4.3%
                                 | |
| 500000 | 1 | 
                                    
                                    4.3%
                                 | |
| 2880000 | 1 | 
                                    
                                    4.3%
                                 | |
| 4000000 | 1 | 
                                    
                                    4.3%
                                 | |
| 6000000 | 1 | 
                                    
                                    4.3%
                                 | |
| Sysmiss | 589 |