| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 | 
                                    
                                    0.9%
                                 | 
| 30 | 2 | 
                                    
                                    0.9%
                                 | |
| 50 | 5 | 
                                    
                                    2.3%
                                 | |
| 53 | 1 | 
                                    
                                    0.5%
                                 | |
| 55 | 4 | 
                                    
                                    1.9%
                                 | |
| 60 | 10 | 
                                    
                                    4.7%
                                 | |
| 62 | 1 | 
                                    
                                    0.5%
                                 | |
| 65 | 8 | 
                                    
                                    3.7%
                                 | |
| 66 | 1 | 
                                    
                                    0.5%
                                 | |
| 70 | 21 | 
                                    
                                    9.8%
                                 | |
| 75 | 4 | 
                                    
                                    1.9%
                                 | |
| 80 | 30 | 
                                    
                                    14%
                                 | |
| 85 | 7 | 
                                    
                                    3.3%
                                 | |
| 90 | 13 | 
                                    
                                    6%
                                 | |
| 95 | 7 | 
                                    
                                    3.3%
                                 | |
| 98 | 1 | 
                                    
                                    0.5%
                                 | |
| 100 | 98 | 
                                    
                                    45.6%
                                 |