| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 16 |
1.3%
|
| -1 | Don't know | 660 |
52.5%
|
| 1 | France | 50 |
4%
|
| 2 | China | 181 |
14.4%
|
| 3 | India | 350 |
27.8%
|