| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1516 |
69.3%
|
| 2 | Once | 140 |
6.4%
|
| 3 | Twice | 117 |
5.3%
|
| 4 | 3-5 times | 114 |
5.2%
|
| 5 | 6-10 times | 96 |
4.4%
|
| 6 | 11-20 times | 61 |
2.8%
|
| 7 | More than 20 times | 133 |
6.1%
|
| 8 | Not applicable | 11 |
0.5%
|