| Value | Category | Cases | |
|---|---|---|---|
| 1 | Per week | 219 |
21.9%
|
| 2 | Per month | 135 |
13.5%
|
| 3 | Annually | 1 |
0.1%
|
| 8 | Not applicable | 642 |
64.3%
|
| 9 | Unspecified | 1 |
0.1%
|