Era
Since 1945
1945-
1,529
1945-1982
186
1945-1983
118
1982-
104
1948-1980
94
1945-1989
93
1945-1985
74
1948-
74
1985-
63
1980-
61
1983-
57
1955-
52
20th century
32
1955-1983
28
1989-
25
1979-
17
1918-
14
1973-
14
1970-
13
1960-
12
1983-2002
12
Civil War, 1960-1996
12
1959-
11
1959-1990
11
1992-
11
1943-
10
1971-1990
10
1982-1994
10
1945 - 1982
9
1990-
9
1945-1964
8
1974-
8
Since 1982
8
1926-2016
7
1946-
7
1955-1965
7
1958-
7
1979-1992
7
1994-
7
1945-1971
6
1972-
6
21st century
6
Since 1918
6
Since 1983
6
1946-1970
5
1949-
5
1961-
5
1965-
5
1970-1982
5
more ...