| Value | Category | Cases | |
|---|---|---|---|
| -98 | Don't know | 66 |
9.5%
|
| 1 | 1-2 times | 74 |
10.6%
|
| 2 | 3-5 times | 384 |
55.3%
|
| 3 | 4-6 times | 165 |
23.7%
|
| 4 | None | 6 |
0.9%
|
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |