| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| 1 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 3 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 5 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 10 | 3 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 20 | 3 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 30 | 2 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| 38 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 40 | 4 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    |
| 48 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 50 | 10 | 
                                                                 
                                    
                                    7.2%
                                 
                                                             | 
                                                        
                    |
| 54 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 60 | 15 | 
                                                                 
                                    
                                    10.9%
                                 
                                                             | 
                                                        
                    |
| 65 | 4 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    |
| 70 | 24 | 
                                                                 
                                    
                                    17.4%
                                 
                                                             | 
                                                        
                    |
| 75 | 16 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    |
| 80 | 15 | 
                                                                 
                                    
                                    10.9%
                                 
                                                             | 
                                                        
                    |
| 85 | 8 | 
                                                                 
                                    
                                    5.8%
                                 
                                                             | 
                                                        
                    |
| 90 | 12 | 
                                                                 
                                    
                                    8.7%
                                 
                                                             | 
                                                        
                    |
| 92 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 95 | 3 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 96 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 98 | 1 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 100 | 9 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 254 |