| Dates | Country | % Correct |
|---|---|---|
| 1878 - | Bulgaria | 97%
|
| 1991 - | Moldova | 96%
|
| 1991 - | Ukraine | 96%
|
| 1919 - | Hungary | 95%
|
| 1866 - 1919, 2006 - | Serbia | 95%
|
| 1922 - 1941, 1943 - 1991 | Soviet Union | 88%
|
| 1866 - 1919 | Austria-Hungary | 86%
|
| 1919 - 2003 | Yugoslavia | 85%
|
| 1866 - 1922 | Russia | 84%
|
| 1941 - 1943 | Germany | 82%
|
| 1866 - 1878 | Ottoman Empire | 79%
|
| 1919 - 1939 | Poland | 77%
|
| 1919 - 1939 | Czechoslovakia | 60%
|