| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 42 |
0.6%
|
| -8 | Refused | 15 |
0.2%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 0 |
0%
|
| 1 | Yes | 1856 |
26.2%
|
| 2 | No | 5160 |
73%
|