| Language | Asia (n = 23) | North and South America (n = 11) | Europe (n = 32) | Oceania (n = 5) |
| Belgian | 0 | 0 | 2 | 0 |
| Chinese | 17 | 0 | 0 | 0 |
| Dutch | 0 | 0 | 3 | 0 |
| English | 2 | 8 | 9 | 5 |
| Finn | 0 | 0 | 1 | 0 |
| French | 0 | 0 | 3 | 0 |
| German | 0 | 0 | 4 | 0 |
| Greek | 0 | 0 | 1 | 0 |
| Italian | 0 | 0 | 1 | 0 |
| Korean | 4 | 0 | 0 | 0 |
| Spanish | 0 | 3 | 8 | 0 |