| Similarity | Rank | |
|---|---|---|
| 1930 | 0.882 | 4100 |
| 1950 | 0.864 | 3691 |
| 1890 | 0.824 | 10843 |
| 1940 | 0.814 | 7398 |
| 1960 | 0.806 | 2807 |
| 1900 | 0.799 | 20137 |
| 1880 | 0.797 | 9812 |
| 1870 | 0.786 | 11182 |
| 1970 | 0.779 | 2583 |
| 1830 | 0.770 | 13819 |
| 1840 | 0.744 | 13067 |
| nineteenth | 0.743 | 2686 |
| 1850 | 0.742 | 13777 |
| 1800 | 0.740 | 33369 |
| 1860 | 0.733 | 11907 |
| mid-nineteenth | 0.725 | 18774 |
| 1820 | 0.724 | 20795 |
| pre-war | 0.715 | 9050 |
| heyday | 0.714 | 14276 |
| inter-war | 0.713 | 11074 |
| 1980 | 0.710 | 2404 |
| mid-1960s | 0.709 | 19473 |
| '30s | 0.703 | 40698 |
| post-war | 0.698 | 4355 |
| 1760 | 0.696 | 28511 |