| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 9 |
0.7%
|
| -1 | Don't know | 539 |
39.8%
|
| 1 | France | 13 |
1%
|
| 2 | China | 95 |
7%
|
| 3 | India | 697 |
51.5%
|