| Value | Category | Cases | |
|---|---|---|---|
| 1 | only once or twice | 106 |
16.4%
|
| 2 | in some months but not every month | 296 |
45.9%
|
| 3 | almost every month | 241 |
37.4%
|
| 98 | don't know | 2 |
0.3%
|
| 99 | refused | 0 |
0%
|
| Sysmiss | 1369 |