| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -8 | Refusal (spontaneous) | 1 |
0.2%
|
| 0 | 147 |
28.5%
|
|
| 1 | 226 |
43.9%
|
|
| 2 | 94 |
18.3%
|
|
| 3 | 26 |
5%
|
|
| 4 | 10 |
1.9%
|
|
| 5 | 8 |
1.6%
|
|
| 6 | 1 |
0.2%
|
|
| 8 | 1 |
0.2%
|
|
| 15 | 1 |
0.2%
|