Era
20th century
1,958
19th century
750
1900-1999
261
20e siècle
258
21st century
219
1975-
164
18th century
120
Civil War, 1861-1865
100
1951-
89
1877-1964
86
1865-1950
79
1929-1968
77
1945-
74
1980-2020
66
19e siècle
59
Colonial period, ca. 1600-1775
55
Since 1975
55
1989-
54
To 1964
51
1775-1865
49
1961-1978
47
1980-
44
1800-1899
42
1945-1989
42
17th century
41
2000-2099
40
1868-1963
39
1933-1945
38
21e siècle
36
1863-1877
35
1925-1965
34
1964-
32
1978-1989
32
1961-
29
To 1863
29
1865-1877
26
1960-1980
26
1861-1865
24
1994-
24
1924-1987
23
1964-1975
23
1941-1955
22
1948-1961
22
1993-
22
1865-1918
21
1946-
21
1961-1994
21
1960-
20
1800-1999
19
1809-1865
19
more ...