| Value | Category | Cases | |
|---|---|---|---|
| 0 | 30 | 
                                    
                                    0.1%
                                 | |
| 1 | 10 | 
                                    
                                    0%
                                 | |
| 2 | 4 | 
                                    
                                    0%
                                 | |
| 88 | Not applicable | 12 | 
                                    
                                    0.1%
                                 | 
| 99 | Unspecified | 21134 | 
                                    
                                    99.7%
                                 |