| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
0%
|
| -8 | Refused | 6 |
0.1%
|
| -5 | Not Applicable | 0 |
0%
|
| -3 | Missing | 23 |
0.3%
|
| 1 | Yes | 136 |
1.9%
|
| 2 | No | 7130 |
97.7%
|