Era
20th century
26,463
19th century
12,926
18th century
4,878
1564-1616
3,230
17th century
2,994
21st century
2,948
1945-
2,564
Civil War, 1861-1865
2,502
16th century
2,064
Early modern, 1500-1700
1,719
1989-
1,428
1945-1989
1,412
Revolution, 1775-1783
1,365
1900-1999
1,267
1933-1945
1,258
To 1500
1,231
Colonial period, ca. 1600-1775
1,191
1918-1945
740
Middle English, 1100-1500
694
1882-1941
686
1608-1674
663
Early modern and Elizabethan, 1500-1600
638
1980-
613
1946-
556
-1400
538
1809-1865
508
Revolution, 1789-1799
477
1800-1899
468
1960-
453
1951-
449
2000-2099
447
1775-1865
443
1900 - 1999
438
Middle Ages, 600-1500
389
To 1775
387
1775-1783
361
Old English, ca. 450-1100
353
1812-1870
351
1865-1950
348
1861-1865
346
1783-1865
344
1960-1980
343
2001-2009
340
1770-1850
338
1843-1916
334
1818-1883
333
1993-
330
1897-1962
324
Medieval, 500-1500
322
1981-1989
319
more ...