| Value | Category | Cases | |
|---|---|---|---|
| 1 | In the last year | 40 |
19.3%
|
| 2 | More than a year ago | 16 |
7.7%
|
| 3 | Never | 126 |
60.9%
|
| 77 | Don't know | 25 |
12.1%
|
| Sysmiss | 4265 |