| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, never | 217572 |
92.5%
|
| 2 | Yes, once | 15449 |
6.6%
|
| 3 | Yes, twice or more | 2265 |
1%
|
| 7 | N/A | 24947 | |
| 8 | Invalid | 297 | |
| 9 | Missing | 10793 |