| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect/Do not know | 381 | 
                                    
                                    20.9%
                                 | 
| 1 | Correct | 1427 | 
                                    
                                    78.3%
                                 | 
| 999 | Refused/Skipped | 14 | 
                                    
                                    0.8%
                                 |