| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 410 |
15.8%
|
| -1 | Don't know | 25 |
1%
|
| 1 | France | 193 |
7.4%
|
| 2 | China | 492 |
19%
|
| 3 | India | 1476 |
56.9%
|