| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 1 |
0.1%
|
| 1 | Often | 13 |
1.1%
|
| 2 | Sometimes | 53 |
4.4%
|
| 3 | Rarely | 136 |
11.3%
|
| 4 | Never | 997 |
83.1%
|