| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 30 |
2.1%
|
| -1 | Don't know | 659 |
47.1%
|
| 1 | France | 84 |
6%
|
| 2 | China | 248 |
17.7%
|
| 3 | India | 379 |
27.1%
|