| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 1 |
0.1%
|
| -1 | Don't know | 71 |
5.9%
|
| 1 | France | 277 |
23.1%
|
| 2 | China | 429 |
35.8%
|
| 3 | India | 422 |
35.2%
|