Era
1969-
20th century
36
Since 1969
20
1961-1969
15
21st century
15
Since 1900
10
1945-1989
9
1989-
8
1981-1989
7
1980-
6
2000-2099
6
1946-
5
1960-
5
1960-1980
5
1965-
5
1969-1974
5
1944-
4
1945-
4
1956-
4
1966-
4
1968-1998
4
1974-1977
4
1989-1993
4
Civil War, 2011-
4
Since 1945
4
1948-
3
1952-
3
1957-
3
1963-1969
3
1970-
3
1971-
3
1971-1981
3
1972-
3
1975-
3
1977-1981
3
1998-
3
Since 1961
3
active 19th century
3
1900-2099
2
1931-
2
1936-2002
2
1945-1975
2
1947-
2
1951-
2
1951-1969
2
1962-
2
1963-
2
1964-
2
1967-
2
1968-
2
more ...