| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 4 | 
                                    
                                    0.4%
                                 | 
| 8 | Not applicable | 977 | 
                                    
                                    97.9%
                                 | 
| 9 | Unspecified | 17 | 
                                    
                                    1.7%
                                 |