| Member since | Republic | % Correct |
|---|---|---|
| 1922 | Ukraine | 97%
|
| 1940 | Estonia | 95%
|
| 1940 | Latvia | 94%
|
| 1940 | Lithuania | 94%
|
| 1922 | Belarus | 92%
|
| 1924 | Turkmenistan | 92%
|
| 1922 | Armenia | 91%
|
| 1922 | Georgia | 91%
|
| 1936 | Kazakhstan | 89%
|
| 1924 | Uzbekistan | 89%
|
| 1922 | Azerbaijan | 88%
|
| 1929 | Tajikistan | 88%
|
| 1922 | Russia | 87%
|
| 1940 | Moldova | 83%
|
| 1936 | Kyrgyzstan | 79%
|