| Native Speaker | Country | % Correct |
|---|---|---|
| 14,270,000 | Ukraine | 99%
|
| 143,800,000 | Russia | 98%
|
| 7,850,000 | Belarus | 97%
|
| 325,760 | Estonia | 94%
|
| 520,100 | Latvia | 94%
|
| 176,500 | Lithuania | 93%
|
| 380,700 | Moldova | 85%
|
| 3,000,000 | Germany | 75%
|
| 10,500 | Bulgaria | 65%
|