| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once or twice | 389 |
53.1%
|
| 2 | In some months, but not every months | 268 |
36.6%
|
| 3 | In every month | 70 |
9.5%
|
| 8 | Don't know | 3 |
0.4%
|
| 9 | Refused | 3 |
0.4%
|
| Sysmiss | 19178 |