| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 5 |
0.3%
|
| -1 | Don't know | 322 |
21.1%
|
| 1 | France | 63 |
4.1%
|
| 2 | China | 194 |
12.7%
|
| 3 | India | 944 |
61.8%
|