| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, never | 125709 |
75.5%
|
| 2 | Yes, once | 30499 |
18.3%
|
| 3 | Yes, twice or more | 10354 |
6.2%
|
| 7 | N/A | 345554 | |
| 8 | Invalid | 302 | |
| 9 | Miss | 3540 |