| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 210 |
8.7%
|
| -1 | Don't know | 945 |
39.1%
|
| 1 | France | 391 |
16.2%
|
| 2 | China | 309 |
12.8%
|
| 3 | India | 560 |
23.2%
|