| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 | 
                                    
                                    13.7%
                                 | 
| 0 | 2 | 
                                    
                                    3.9%
                                 | |
| 1 | 1 | 
                                    
                                    2%
                                 | |
| 34 | 1 | 
                                    
                                    2%
                                 | |
| 100 | 2 | 
                                    
                                    3.9%
                                 | |
| 200 | 1 | 
                                    
                                    2%
                                 | |
| 400 | 2 | 
                                    
                                    3.9%
                                 | |
| 500 | 4 | 
                                    
                                    7.8%
                                 | |
| 700 | 1 | 
                                    
                                    2%
                                 | |
| 950 | 1 | 
                                    
                                    2%
                                 | |
| 1000 | 5 | 
                                    
                                    9.8%
                                 | |
| 1400 | 1 | 
                                    
                                    2%
                                 | |
| 1437 | 1 | 
                                    
                                    2%
                                 | |
| 1500 | 1 | 
                                    
                                    2%
                                 | |
| 1600 | 1 | 
                                    
                                    2%
                                 | |
| 2000 | 4 | 
                                    
                                    7.8%
                                 | |
| 3000 | 1 | 
                                    
                                    2%
                                 | |
| 4500 | 1 | 
                                    
                                    2%
                                 | |
| 5000 | 2 | 
                                    
                                    3.9%
                                 | |
| 6500 | 1 | 
                                    
                                    2%
                                 | |
| 7000 | 1 | 
                                    
                                    2%
                                 | |
| 16000 | 1 | 
                                    
                                    2%
                                 | |
| 36000 | 1 | 
                                    
                                    2%
                                 | |
| 45000 | 1 | 
                                    
                                    2%
                                 | |
| 120000 | 1 | 
                                    
                                    2%
                                 | |
| 157000 | 1 | 
                                    
                                    2%
                                 | |
| 180000 | 1 | 
                                    
                                    2%
                                 | |
| 200000 | 1 | 
                                    
                                    2%
                                 | |
| 300000 | 1 | 
                                    
                                    2%
                                 | |
| 463800 | 1 | 
                                    
                                    2%
                                 | |
| 600000 | 1 | 
                                    
                                    2%
                                 | |
| Sysmiss | 351 |