| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 | 
                                    
                                    3.1%
                                 | 
| 0 | 78 | 
                                    
                                    12.7%
                                 | |
| 1 | 8 | 
                                    
                                    1.3%
                                 | |
| 2 | 1 | 
                                    
                                    0.2%
                                 | |
| 3 | 2 | 
                                    
                                    0.3%
                                 | |
| 5 | 13 | 
                                    
                                    2.1%
                                 | |
| 10 | 25 | 
                                    
                                    4.1%
                                 | |
| 13 | 1 | 
                                    
                                    0.2%
                                 | |
| 15 | 1 | 
                                    
                                    0.2%
                                 | |
| 17 | 1 | 
                                    
                                    0.2%
                                 | |
| 18 | 1 | 
                                    
                                    0.2%
                                 | |
| 20 | 26 | 
                                    
                                    4.2%
                                 | |
| 25 | 2 | 
                                    
                                    0.3%
                                 | |
| 30 | 24 | 
                                    
                                    3.9%
                                 | |
| 35 | 3 | 
                                    
                                    0.5%
                                 | |
| 40 | 10 | 
                                    
                                    1.6%
                                 | |
| 45 | 1 | 
                                    
                                    0.2%
                                 | |
| 50 | 14 | 
                                    
                                    2.3%
                                 | |
| 60 | 10 | 
                                    
                                    1.6%
                                 | |
| 70 | 18 | 
                                    
                                    2.9%
                                 | |
| 75 | 1 | 
                                    
                                    0.2%
                                 | |
| 80 | 33 | 
                                    
                                    5.4%
                                 | |
| 85 | 4 | 
                                    
                                    0.7%
                                 | |
| 90 | 48 | 
                                    
                                    7.8%
                                 | |
| 95 | 21 | 
                                    
                                    3.4%
                                 | |
| 98 | 2 | 
                                    
                                    0.3%
                                 | |
| 99 | 14 | 
                                    
                                    2.3%
                                 | |
| 100 | 231 | 
                                    
                                    37.7%
                                 |