| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1570 |
65.4%
|
| 1 | Just once or twice | 372 |
15.5%
|
| 2 | Several times | 297 |
12.4%
|
| 3 | Many times | 98 |
4.1%
|
| 4 | Always | 55 |
2.3%
|
| 9 | Don't know | 7 |
0.3%
|