| Similarity | Rank | |
|---|---|---|
| 1980s | 0.982 | 7178 |
| 1960s | 0.978 | 7911 |
| 1970's | 0.966 | 18387 |
| mid-1970s | 0.965 | 53815 |
| 1980's | 0.955 | 18127 |
| 1950s | 0.954 | 9648 |
| mid-1960s | 0.948 | 63672 |
| 1960's | 0.947 | 19445 |
| 1990s | 0.944 | 7471 |
| mid-1980s | 0.943 | 43287 |
| 1990's | 0.932 | 20839 |
| mid-1950s | 0.931 | 83299 |
| 1940s | 0.924 | 16777 |
| 1930s | 0.905 | 11976 |
| 1950's | 0.902 | 20985 |
| mid-1990s | 0.901 | 35693 |
| 1920s | 0.885 | 14792 |
| 2000s | 0.885 | 26262 |
| seventies | 0.881 | 24080 |
| nineties | 0.877 | 28357 |
| eighties | 0.874 | 24958 |
| 1940's | 0.874 | 33633 |
| 1930's | 0.873 | 26347 |
| '70s | 0.868 | 23330 |
| 70s | 0.862 | 14122 |