| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, never | 107679 |
91.5%
|
| 2 | Yes, once | 7383 |
6.3%
|
| 3 | Yes, twice or more | 2586 |
2.2%
|
| 7 | N/A | 150144 | |
| 8 | Invalid | 142 | |
| 9 | Missing | 3389 |