| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 | 
                                    
                                    5.2%
                                 | 
| 0 | 2 | 
                                    
                                    0.5%
                                 | |
| 10 | 1 | 
                                    
                                    0.3%
                                 | |
| 20 | 1 | 
                                    
                                    0.3%
                                 | |
| 30 | 2 | 
                                    
                                    0.5%
                                 | |
| 33 | 2 | 
                                    
                                    0.5%
                                 | |
| 40 | 7 | 
                                    
                                    1.9%
                                 | |
| 50 | 13 | 
                                    
                                    3.6%
                                 | |
| 52 | 1 | 
                                    
                                    0.3%
                                 | |
| 55 | 1 | 
                                    
                                    0.3%
                                 | |
| 56 | 1 | 
                                    
                                    0.3%
                                 | |
| 60 | 24 | 
                                    
                                    6.6%
                                 | |
| 65 | 2 | 
                                    
                                    0.5%
                                 | |
| 70 | 32 | 
                                    
                                    8.8%
                                 | |
| 72 | 1 | 
                                    
                                    0.3%
                                 | |
| 73 | 1 | 
                                    
                                    0.3%
                                 | |
| 75 | 15 | 
                                    
                                    4.1%
                                 | |
| 76 | 1 | 
                                    
                                    0.3%
                                 | |
| 80 | 59 | 
                                    
                                    16.2%
                                 | |
| 82 | 1 | 
                                    
                                    0.3%
                                 | |
| 85 | 26 | 
                                    
                                    7.1%
                                 | |
| 86 | 1 | 
                                    
                                    0.3%
                                 | |
| 88 | 1 | 
                                    
                                    0.3%
                                 | |
| 89 | 1 | 
                                    
                                    0.3%
                                 | |
| 90 | 47 | 
                                    
                                    12.9%
                                 | |
| 91 | 1 | 
                                    
                                    0.3%
                                 | |
| 92 | 5 | 
                                    
                                    1.4%
                                 | |
| 93 | 1 | 
                                    
                                    0.3%
                                 | |
| 95 | 23 | 
                                    
                                    6.3%
                                 | |
| 96 | 1 | 
                                    
                                    0.3%
                                 | |
| 97 | 3 | 
                                    
                                    0.8%
                                 | |
| 98 | 2 | 
                                    
                                    0.5%
                                 | |
| 99 | 4 | 
                                    
                                    1.1%
                                 | |
| 100 | 62 | 
                                    
                                    17%
                                 | |
| Sysmiss | 591 |