| Value | Category | Cases | |
|---|---|---|---|
| -5 | Missing; Not available | 1 |
0%
|
| -2 | No answer | 2 |
0.1%
|
| -1 | Don't know | 850 |
26.6%
|
| 1 | France | 622 |
19.4%
|
| 2 | China | 496 |
15.5%
|
| 3 | India | 1229 |
38.4%
|