| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2991 |
95%
|
| 1 | Once | 46 |
1.5%
|
| 2 | Twice | 17 |
0.5%
|
| 3 | 3-5 times | 8 |
0.3%
|
| 4 | More than 6 times | 11 |
0.3%
|
| 5 | I do not know | 0 |
0%
|
| 6 | Not applicable | 77 |
2.4%
|