| Date of Fertility Rate Dropping Below 2.1 | Country | % Correct |
|---|---|---|
| 1927 | Germany | 100%
|
| 1915 | France | 97%
|
| 1918 | United Kingdom | 97%
|
| 1933 | United States | 90%
|
| 1933 | Austria | 87%
|
| 1931 | Norway | 81%
|
| 1942 | Finland | 77%
|
| 1943 | Russia | 77%
|
| 1927 | Sweden | 77%
|
| 1933 | Belgium | 74%
|
| 1933 | Denmark | 74%
|
| 1929 | Switzerland | 71%
|
| 1934 | Luxembourg | 65%
|
| 1931 | Czechia | 58%
|
| 1945 | Slovenia | 39%
|
| 1943 | Armenia | 23%
|