| Value | Category | Cases | |
|---|---|---|---|
| 10 | Almost every month | 3056 |
1.2%
|
| 20 | Some months, but not every month | 4652 |
1.9%
|
| 30 | Only one or two months | 631 |
0.3%
|
| 40 | _Refused | 38 |
0%
|
| 50 | _Don't know | 29 |
0%
|
| 60 | _Not applicable | 240766 |
96.6%
|