| Similarity | Rank | |
|---|---|---|
| 1940s | 0.981 | 16777 |
| 1960s | 0.977 | 7911 |
| 1950's | 0.965 | 20985 |
| 1960's | 0.964 | 19445 |
| 1930s | 0.956 | 11976 |
| 1970s | 0.954 | 7314 |
| 1940's | 0.946 | 33633 |
| 1920s | 0.945 | 14792 |
| 1970's | 0.944 | 18387 |
| mid-1950s | 0.938 | 83299 |
| 1930's | 0.932 | 26347 |
| mid-1960s | 0.932 | 63672 |
| 1980s | 0.918 | 7178 |
| 1920's | 0.916 | 30219 |
| 1980's | 0.905 | 18127 |
| mid-1970s | 0.903 | 53815 |
| 1910s | 0.901 | 92300 |
| '40s | 0.894 | 67219 |
| '30s | 0.886 | 67801 |
| 1900s | 0.885 | 28575 |
| seventies | 0.884 | 24080 |
| '50s | 0.883 | 40055 |
| sixties | 0.882 | 21797 |
| mid-20th | 0.871 | 75724 |
| '60s | 0.867 | 25607 |