| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 54565 | 
                                    
                                    33%
                                 | 
| 2 | No, never | 110745 | 
                                    
                                    67%
                                 | 
| 7 | N/A | 315075 | |
| 8 | Invalid | 103 | |
| 9 | Missing | 5002 |