| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 | 
                                    
                                    3.1%
                                 | 
| 20 | 1 | 
                                    
                                    1%
                                 | |
| 21 | 1 | 
                                    
                                    1%
                                 | |
| 24 | 1 | 
                                    
                                    1%
                                 | |
| 25 | 1 | 
                                    
                                    1%
                                 | |
| 26 | 1 | 
                                    
                                    1%
                                 | |
| 27 | 8 | 
                                    
                                    8.2%
                                 | |
| 28 | 3 | 
                                    
                                    3.1%
                                 | |
| 29 | 1 | 
                                    
                                    1%
                                 | |
| 30 | 4 | 
                                    
                                    4.1%
                                 | |
| 31 | 2 | 
                                    
                                    2.1%
                                 | |
| 32 | 5 | 
                                    
                                    5.2%
                                 | |
| 33 | 4 | 
                                    
                                    4.1%
                                 | |
| 34 | 1 | 
                                    
                                    1%
                                 | |
| 35 | 6 | 
                                    
                                    6.2%
                                 | |
| 36 | 4 | 
                                    
                                    4.1%
                                 | |
| 37 | 4 | 
                                    
                                    4.1%
                                 | |
| 38 | 1 | 
                                    
                                    1%
                                 | |
| 39 | 2 | 
                                    
                                    2.1%
                                 | |
| 40 | 8 | 
                                    
                                    8.2%
                                 | |
| 41 | 4 | 
                                    
                                    4.1%
                                 | |
| 42 | 2 | 
                                    
                                    2.1%
                                 | |
| 43 | 3 | 
                                    
                                    3.1%
                                 | |
| 44 | 3 | 
                                    
                                    3.1%
                                 | |
| 45 | 2 | 
                                    
                                    2.1%
                                 | |
| 47 | 6 | 
                                    
                                    6.2%
                                 | |
| 48 | 3 | 
                                    
                                    3.1%
                                 | |
| 49 | 2 | 
                                    
                                    2.1%
                                 | |
| 50 | 4 | 
                                    
                                    4.1%
                                 | |
| 51 | 1 | 
                                    
                                    1%
                                 | |
| 52 | 1 | 
                                    
                                    1%
                                 | |
| 53 | 1 | 
                                    
                                    1%
                                 | |
| 54 | 1 | 
                                    
                                    1%
                                 | |
| 55 | 1 | 
                                    
                                    1%
                                 | |
| 58 | 1 | 
                                    
                                    1%
                                 | |
| 60 | 1 | 
                                    
                                    1%
                                 |