| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2327 |
80.6%
|
| 1 | Once | 181 |
6.3%
|
| 2 | Twice | 124 |
4.3%
|
| 3 | 3-5 times | 80 |
2.8%
|
| 4 | 6 times and more | 71 |
2.5%
|
| 5 | I do not know | 1 |
0%
|
| 6 | Not applicable | 102 |
3.5%
|