| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 0 |
0%
|
| -1 | Don't know | 0 |
0%
|
| 60 | 1 |
20%
|
|
| 120 | 1 |
20%
|
|
| 250 | 1 |
20%
|
|
| 400 | 2 |
40%
|