| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 108 | 
                                    
                                    31.5%
                                 | 
| 0 | 122 | 
                                    
                                    35.6%
                                 | |
| 100000 | 49 | 
                                    
                                    14.3%
                                 | |
| 200000 | 19 | 
                                    
                                    5.5%
                                 | |
| 300000 | 11 | 
                                    
                                    3.2%
                                 | |
| 400000 | 3 | 
                                    
                                    0.9%
                                 | |
| 500000 | 13 | 
                                    
                                    3.8%
                                 | |
| 600000 | 2 | 
                                    
                                    0.6%
                                 | |
| 800000 | 1 | 
                                    
                                    0.3%
                                 | |
| 1000000 | 7 | 
                                    
                                    2%
                                 | |
| 1100000 | 1 | 
                                    
                                    0.3%
                                 | |
| 1500000 | 1 | 
                                    
                                    0.3%
                                 | |
| 2000000 | 2 | 
                                    
                                    0.6%
                                 | |
| 15000000 | 1 | 
                                    
                                    0.3%
                                 | |
| 19000000 | 1 | 
                                    
                                    0.3%
                                 | |
| 20000000 | 1 | 
                                    
                                    0.3%
                                 | |
| 143200000 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 20 |