| Country | Year | |||||
|---|---|---|---|---|---|---|
| Belarus | 2023 | 4,324,767 | 4,981,940 | 9,306,707 | ||
| Bulgaria | 2023 | 3,296,103 | 3,474,561 | 6,770,664 | ||
| Czechia | 2023 | 5,229,308 | 5,387,148 | 10,616,456 | ||
| Hungary | 2023 | 4,576,824 | 5,021,750 | 9,598,574 | ||
| Slovakia | 2023 | 2,607,027 | 2,769,382 | 5,376,409 | ||
| Moldova | 2023 | 1,577,952 | 1,642,485 | 3,220,437 | ||
| Poland | 2023 | 18,207,714 | 19,469,026 | 37,676,740 | ||
| Romania | 2023 | 10,144,598 | 10,735,322 | 20,879,920 | ||
| Russia | 2023 | 64,455,541 | 75,079,231 | 139,534,772 | ||
| Ukraine | 2023 | 19,900,058 | 23,049,212 | 42,949,270 |