| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 14093 | 
                                    
                                    11.9%
                                 | 
| 2 | No, never | 104544 | 
                                    
                                    88.1%
                                 | 
| 7 | N/A | 355603 | |
| 8 | Invalid | 150 | |
| 9 | Missing | 11100 |