| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 3507 |
22.4%
|
| 1 | yes, always | 10132 |
64.7%
|
| 2 | yes, sometime | 2027 |
12.9%
|
| 8 | don't know | 0 |
0%
|
| 9 | 1 |
0%
|