| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 | 
                                    
                                    3.8%
                                 | 
| 10 | 1 | 
                                    
                                    0.2%
                                 | |
| 20 | 3 | 
                                    
                                    0.6%
                                 | |
| 21 | 1 | 
                                    
                                    0.2%
                                 | |
| 32 | 1 | 
                                    
                                    0.2%
                                 | |
| 35 | 1 | 
                                    
                                    0.2%
                                 | |
| 40 | 2 | 
                                    
                                    0.4%
                                 | |
| 50 | 10 | 
                                    
                                    2%
                                 | |
| 53 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 10 | 
                                    
                                    2%
                                 | |
| 69 | 1 | 
                                    
                                    0.2%
                                 | |
| 70 | 9 | 
                                    
                                    1.8%
                                 | |
| 75 | 5 | 
                                    
                                    1%
                                 | |
| 80 | 24 | 
                                    
                                    4.8%
                                 | |
| 85 | 5 | 
                                    
                                    1%
                                 | |
| 87 | 3 | 
                                    
                                    0.6%
                                 | |
| 88 | 1 | 
                                    
                                    0.2%
                                 | |
| 90 | 31 | 
                                    
                                    6.2%
                                 | |
| 94 | 1 | 
                                    
                                    0.2%
                                 | |
| 95 | 10 | 
                                    
                                    2%
                                 | |
| 96 | 2 | 
                                    
                                    0.4%
                                 | |
| 97 | 1 | 
                                    
                                    0.2%
                                 | |
| 98 | 4 | 
                                    
                                    0.8%
                                 | |
| 99 | 9 | 
                                    
                                    1.8%
                                 | |
| 100 | 343 | 
                                    
                                    68.9%
                                 | |
| Sysmiss | 114 |