| % native speakers | Unofficial language | Country | % Correct |
|---|---|---|---|
| 35,0% | Russian | Ukraine | 98%
|
| 37,2% | Russian | Latvia | 97%
|
| 29,6% | Russian | Estonia | 97%
|
| 20,4% | Catalan | Spain | 96%
|
| 7,2% | Russian | Lithuania | 90%
|
| 9,4% | Turkish | Bulgaria | 84%
|
| 5,3% | Albanian | Montenegro | 82%
|
| 5,3% | Polish | Lithuania | 81%
|
| 9,4% | Hungarian | Slovakia | 80%
|
| 6,1% | Hungarian | Romania | 78%
|