| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2563 |
81.4%
|
| 1 | Once | 160 |
5.1%
|
| 2 | Twice | 140 |
4.4%
|
| 3 | 3-5 times | 116 |
3.7%
|
| 4 | More than 6 times | 150 |
4.8%
|
| 5 | I do not know | 2 |
0.1%
|
| 6 | Not applicable | 19 |
0.6%
|