Era
To 1878
141
1995-
124
1878-1967
114
1967-1995
114
20th century
95
19th century
89
Civil War, 1861-1865
89
1967-
53
1861-1865
48
21st century
43
Since 1995
42
1878-
41
1900-1999
41
1946-
38
1933-1945
37
1945-1989
36
1809-1865
33
2017-2021
30
1800-1899
28
1967 - 1995
27
2000-2099
27
1951-
26
1970-
24
To 1815
22
Since 1967
21
1849-1861
20
1878 - 1967
20
2021-
20
1829-1837
19
1945-
19
Since 1878
17
1865-1950
16
1775-1865
15
1857-1861
15
1900 - 1999
15
1783-1865
14
1789-1809
14
1815-1861
14
2020
14
1808-1875
13
1828-1919
12
1865-1900
12
1953-1961
12
1969-1974
12
1989-
12
1735-1826
11
1865-1877
11
1800 - 1899
10
1865-1883
10
1865-1933
10
more ...