| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (don't know) | 5 |
0.4%
|
| -66 | -66 (refuse to answer) | 3 |
0.3%
|
| 0 | No | 1022 |
91.6%
|
| 1 | Yes | 86 |
7.7%
|