| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    
| 9 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 12 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 25 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 30 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 40 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 50 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 55 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 60 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 70 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 80 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 90 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 100 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 120 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 130 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 131 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 150 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 160 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 190 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 200 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 220 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 250 | 5 | 
                                                                 
                                    
                                    5.1%
                                 
                                                             | 
                                                        
                    |
| 256 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 260 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 300 | 4 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 370 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 400 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 420 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 500 | 7 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    |
| 540 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 580 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 600 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 700 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 750 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 800 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 900 | 3 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 1000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 1500 | 4 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 1600 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 1700 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 1900 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 2000 | 2 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 2500 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 3000 | 5 | 
                                                                 
                                    
                                    5.1%
                                 
                                                             | 
                                                        
                    |
| 4000 | 6 | 
                                                                 
                                    
                                    6.1%
                                 
                                                             | 
                                                        
                    |
| 4500 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 7000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 8000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 10000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 60000 | 1 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 493 |