Era
20th century
26,535
19th century
12,931
18th century
4,887
1564-1616
3,234
17th century
2,998
21st century
2,958
1945-
2,590
Civil War, 1861-1865
2,508
16th century
2,066
Early modern, 1500-1700
1,720
1989-
1,433
1945-1989
1,420
Revolution, 1775-1783
1,365
1900-1999
1,268
1933-1945
1,261
To 1500
1,231
Colonial period, ca. 1600-1775
1,192
1918-1945
741
Middle English, 1100-1500
697
1882-1941
686
1608-1674
664
Early modern and Elizabethan, 1500-1600
641
1980-
613
1946-
556
-1400
541
1809-1865
508
Revolution, 1789-1799
478
1800-1899
468
1960-
456
1951-
449
2000-2099
445
1775-1865
443
1900 - 1999
438
Middle Ages, 600-1500
389
To 1775
388
1775-1783
361
1812-1870
353
Old English, ca. 450-1100
353
1865-1950
349
1861-1865
346
1783-1865
344
1960-1980
343
2001-2009
342
1770-1850
338
1843-1916
334
1818-1883
333
1993-
330
1897-1962
327
Medieval, 500-1500
323
1981-1989
321
more ...