| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2286 |
72.6%
|
| 1 | Once | 180 |
5.7%
|
| 2 | Twice | 182 |
5.8%
|
| 3 | 3-5 times | 183 |
5.8%
|
| 4 | More than 6 times | 298 |
9.5%
|
| 5 | I do not know | 2 |
0.1%
|
| 6 | Not applicable | 19 |
0.6%
|