Era
20th century
13,560
19th century
8,533
1900-1999
4,494
Early works to 1800
3,438
18th century
2,764
21st century
2,477
To 1500
1,686
1800-1899
1,523
17th century
1,499
16th century
1,207
1900 - 1999
1,200
2000-2099
874
20e siècle
798
1945-
758
Civil War, 1861-1865
700
1800-1999
666
Geschichte
615
Quaternary
581
1700-1799
549
To 1800
541
1728-1779
497
1749-1832
488
1939-1945
466
1786-1847
415
1800-1870
412
1951-
404
1800 - 1899
400
19e siècle
360
Medieval, 500-1500
353
From 2 million years ago
338
1500-1599
335
1254-1323?
323
1875-1962
322
1947-
319
Revolution, 1775-1783
307
Pleistocene
290
20e siècle
289
1900-2099
287
1600-1699
272
1872-1929
272
1868-1912
266
1960-
266
1949-
258
1480-1521
255
21e siècle
242
1944-
240
Since 1945
240
1963-
234
1870-1945
232
1981-
226
more ...