| Value | Category | Cases | |
|---|---|---|---|
| -97 | Don't know | 6 |
2.5%
|
| 1 | 1 | 50 |
20.9%
|
| 2 | 2 | 147 |
61.5%
|
| 3 | 3 | 36 |
15.1%
|
| 4 | 4 | 0 | |
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |