| Value | Category | Cases | |
|---|---|---|---|
| 1 | At least once a month | 6 |
0.4%
|
| 2 | At least once a week | 532 |
36.1%
|
| 3 | Don't know | 1 |
0.1%
|
| 4 | Everytime we use them (daily) | 935 |
63.4%
|