| Value | Category | Cases | |
|---|---|---|---|
| -97 | Don't know | 0 | |
| 1 | 1 | 1 |
0.4%
|
| 2 | 2 | 10 |
3.6%
|
| 3 | 3 | 159 |
58%
|
| 4 | 4 | 104 |
38%
|
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |