| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 | 
                                    
                                    12.9%
                                 | 
| 0 | 9 | 
                                    
                                    10.6%
                                 | |
| 4 | 1 | 
                                    
                                    1.2%
                                 | |
| 10 | 1 | 
                                    
                                    1.2%
                                 | |
| 50 | 1 | 
                                    
                                    1.2%
                                 | |
| 65 | 1 | 
                                    
                                    1.2%
                                 | |
| 80 | 1 | 
                                    
                                    1.2%
                                 | |
| 100 | 3 | 
                                    
                                    3.5%
                                 | |
| 120 | 1 | 
                                    
                                    1.2%
                                 | |
| 200 | 2 | 
                                    
                                    2.4%
                                 | |
| 250 | 5 | 
                                    
                                    5.9%
                                 | |
| 300 | 1 | 
                                    
                                    1.2%
                                 | |
| 350 | 3 | 
                                    
                                    3.5%
                                 | |
| 450 | 3 | 
                                    
                                    3.5%
                                 | |
| 480 | 1 | 
                                    
                                    1.2%
                                 | |
| 500 | 4 | 
                                    
                                    4.7%
                                 | |
| 750 | 1 | 
                                    
                                    1.2%
                                 | |
| 850 | 1 | 
                                    
                                    1.2%
                                 | |
| 1100 | 1 | 
                                    
                                    1.2%
                                 | |
| 1200 | 9 | 
                                    
                                    10.6%
                                 | |
| 1250 | 1 | 
                                    
                                    1.2%
                                 | |
| 1400 | 2 | 
                                    
                                    2.4%
                                 | |
| 1500 | 9 | 
                                    
                                    10.6%
                                 | |
| 1600 | 1 | 
                                    
                                    1.2%
                                 | |
| 1800 | 1 | 
                                    
                                    1.2%
                                 | |
| 2100 | 1 | 
                                    
                                    1.2%
                                 | |
| 2500 | 3 | 
                                    
                                    3.5%
                                 | |
| 3000 | 1 | 
                                    
                                    1.2%
                                 | |
| 3200 | 1 | 
                                    
                                    1.2%
                                 | |
| 12000 | 1 | 
                                    
                                    1.2%
                                 | |
| 14000 | 1 | 
                                    
                                    1.2%
                                 | |
| 40000 | 1 | 
                                    
                                    1.2%
                                 | |
| 50000 | 1 | 
                                    
                                    1.2%
                                 | |
| 240000 | 1 | 
                                    
                                    1.2%
                                 | |
| Sysmiss | 65 |