| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 34 | 
                                    
                                    41%
                                 | 
| 3 | 1 | 
                                    
                                    1.2%
                                 | |
| 70 | 1 | 
                                    
                                    1.2%
                                 | |
| 200 | 1 | 
                                    
                                    1.2%
                                 | |
| 300 | 1 | 
                                    
                                    1.2%
                                 | |
| 500 | 1 | 
                                    
                                    1.2%
                                 | |
| 600 | 2 | 
                                    
                                    2.4%
                                 | |
| 650 | 1 | 
                                    
                                    1.2%
                                 | |
| 800 | 5 | 
                                    
                                    6%
                                 | |
| 920 | 1 | 
                                    
                                    1.2%
                                 | |
| 1000 | 2 | 
                                    
                                    2.4%
                                 | |
| 1200 | 7 | 
                                    
                                    8.4%
                                 | |
| 1500 | 2 | 
                                    
                                    2.4%
                                 | |
| 2000 | 2 | 
                                    
                                    2.4%
                                 | |
| 2100 | 1 | 
                                    
                                    1.2%
                                 | |
| 3000 | 3 | 
                                    
                                    3.6%
                                 | |
| 3400 | 1 | 
                                    
                                    1.2%
                                 | |
| 5000 | 3 | 
                                    
                                    3.6%
                                 | |
| 6000 | 2 | 
                                    
                                    2.4%
                                 | |
| 6520 | 1 | 
                                    
                                    1.2%
                                 | |
| 8000 | 1 | 
                                    
                                    1.2%
                                 | |
| 8500 | 1 | 
                                    
                                    1.2%
                                 | |
| 10000 | 1 | 
                                    
                                    1.2%
                                 | |
| 10800 | 1 | 
                                    
                                    1.2%
                                 | |
| 10890 | 1 | 
                                    
                                    1.2%
                                 | |
| 15000 | 2 | 
                                    
                                    2.4%
                                 | |
| 43560 | 1 | 
                                    
                                    1.2%
                                 | |
| 60000 | 1 | 
                                    
                                    1.2%
                                 | |
| 100000 | 1 | 
                                    
                                    1.2%
                                 | |
| 700000 | 1 | 
                                    
                                    1.2%
                                 | |
| Sysmiss | 132 |