| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 3 | 
                                    
                                    0.3%
                                 | 
| 1 | 1 | 11 | 
                                    
                                    1.1%
                                 | 
| 2 | 2 | 4 | 
                                    
                                    0.4%
                                 | 
| 3 | 2 | 
                                    
                                    0.2%
                                 | |
| 88 | Not applicable | 720 | 
                                    
                                    72%
                                 | 
| 99 | Unspecified | 260 | 
                                    
                                    26%
                                 |