| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 20 | 
                                    
                                    1.4%
                                 | 
| 0 | 18 | 
                                    
                                    1.3%
                                 | |
| 1 | 2 | 
                                    
                                    0.1%
                                 | |
| 3 | 1 | 
                                    
                                    0.1%
                                 | |
| 5 | 4 | 
                                    
                                    0.3%
                                 | |
| 10 | 6 | 
                                    
                                    0.4%
                                 | |
| 13 | 1 | 
                                    
                                    0.1%
                                 | |
| 15 | 1 | 
                                    
                                    0.1%
                                 | |
| 18 | 1 | 
                                    
                                    0.1%
                                 | |
| 20 | 5 | 
                                    
                                    0.4%
                                 | |
| 25 | 3 | 
                                    
                                    0.2%
                                 | |
| 30 | 11 | 
                                    
                                    0.8%
                                 | |
| 35 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 13 | 
                                    
                                    0.9%
                                 | |
| 45 | 1 | 
                                    
                                    0.1%
                                 | |
| 50 | 21 | 
                                    
                                    1.5%
                                 | |
| 60 | 15 | 
                                    
                                    1.1%
                                 | |
| 62 | 1 | 
                                    
                                    0.1%
                                 | |
| 65 | 3 | 
                                    
                                    0.2%
                                 | |
| 70 | 21 | 
                                    
                                    1.5%
                                 | |
| 75 | 4 | 
                                    
                                    0.3%
                                 | |
| 80 | 30 | 
                                    
                                    2.1%
                                 | |
| 85 | 2 | 
                                    
                                    0.1%
                                 | |
| 89 | 1 | 
                                    
                                    0.1%
                                 | |
| 90 | 16 | 
                                    
                                    1.1%
                                 | |
| 95 | 10 | 
                                    
                                    0.7%
                                 | |
| 97 | 2 | 
                                    
                                    0.1%
                                 | |
| 98 | 4 | 
                                    
                                    0.3%
                                 | |
| 99 | 1 | 
                                    
                                    0.1%
                                 | |
| 100 | 1197 | 
                                    
                                    84.5%
                                 |