| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 | 
                                    
                                    1.6%
                                 | 
| 0 | 248 | 
                                    
                                    40.5%
                                 | |
| 1 | 5 | 
                                    
                                    0.8%
                                 | |
| 2 | 9 | 
                                    
                                    1.5%
                                 | |
| 3 | 4 | 
                                    
                                    0.7%
                                 | |
| 4 | 4 | 
                                    
                                    0.7%
                                 | |
| 5 | 6 | 
                                    
                                    1%
                                 | |
| 7 | 2 | 
                                    
                                    0.3%
                                 | |
| 8 | 1 | 
                                    
                                    0.2%
                                 | |
| 10 | 12 | 
                                    
                                    2%
                                 | |
| 13 | 1 | 
                                    
                                    0.2%
                                 | |
| 14 | 1 | 
                                    
                                    0.2%
                                 | |
| 15 | 4 | 
                                    
                                    0.7%
                                 | |
| 16 | 2 | 
                                    
                                    0.3%
                                 | |
| 17 | 1 | 
                                    
                                    0.2%
                                 | |
| 20 | 13 | 
                                    
                                    2.1%
                                 | |
| 25 | 1 | 
                                    
                                    0.2%
                                 | |
| 30 | 8 | 
                                    
                                    1.3%
                                 | |
| 33 | 4 | 
                                    
                                    0.7%
                                 | |
| 35 | 3 | 
                                    
                                    0.5%
                                 | |
| 40 | 5 | 
                                    
                                    0.8%
                                 | |
| 45 | 2 | 
                                    
                                    0.3%
                                 | |
| 50 | 15 | 
                                    
                                    2.5%
                                 | |
| 53 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 6 | 
                                    
                                    1%
                                 | |
| 65 | 2 | 
                                    
                                    0.3%
                                 | |
| 66 | 1 | 
                                    
                                    0.2%
                                 | |
| 67 | 2 | 
                                    
                                    0.3%
                                 | |
| 68 | 1 | 
                                    
                                    0.2%
                                 | |
| 70 | 10 | 
                                    
                                    1.6%
                                 | |
| 75 | 1 | 
                                    
                                    0.2%
                                 | |
| 80 | 7 | 
                                    
                                    1.1%
                                 | |
| 90 | 2 | 
                                    
                                    0.3%
                                 | |
| 95 | 2 | 
                                    
                                    0.3%
                                 | |
| 100 | 216 | 
                                    
                                    35.3%
                                 |