| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    9.4%
                                 | 
| 2000 | 2 | 
                                    
                                    3.8%
                                 | |
| 3000 | 1 | 
                                    
                                    1.9%
                                 | |
| 5000 | 1 | 
                                    
                                    1.9%
                                 | |
| 10000 | 3 | 
                                    
                                    5.7%
                                 | |
| 15000 | 1 | 
                                    
                                    1.9%
                                 | |
| 20000 | 5 | 
                                    
                                    9.4%
                                 | |
| 30000 | 5 | 
                                    
                                    9.4%
                                 | |
| 40000 | 2 | 
                                    
                                    3.8%
                                 | |
| 50000 | 1 | 
                                    
                                    1.9%
                                 | |
| 65000 | 1 | 
                                    
                                    1.9%
                                 | |
| 100000 | 9 | 
                                    
                                    17%
                                 | |
| 184000 | 1 | 
                                    
                                    1.9%
                                 | |
| 200000 | 3 | 
                                    
                                    5.7%
                                 | |
| 250000 | 1 | 
                                    
                                    1.9%
                                 | |
| 300000 | 1 | 
                                    
                                    1.9%
                                 | |
| 700000 | 1 | 
                                    
                                    1.9%
                                 | |
| 800000 | 2 | 
                                    
                                    3.8%
                                 | |
| 900000 | 1 | 
                                    
                                    1.9%
                                 | |
| 1000000 | 3 | 
                                    
                                    5.7%
                                 | |
| 1500000 | 1 | 
                                    
                                    1.9%
                                 | |
| 2000000 | 1 | 
                                    
                                    1.9%
                                 | |
| 5000000 | 2 | 
                                    
                                    3.8%
                                 | |
| Sysmiss | 971 |