Era
1960-
50
20th century
22
21st century
15
1989-1994
13
1994-
13
1978-1989
10
1918-2013
6
1945-1960
5
1961-1978
5
1948-1994
4
1991-
3
1948-1961
2
1961-1994
2
1966-
2
1980-
2
1836-1909
1
1837-1901
1
1884-1960
1
1894-1948
1
1909-1948
1
1945-1990
1
1949-
1
1961-1991
1
1975-1994
1
1985-
1
1989-
1
1990-
1
19th century
1
2000-
1
Civil War, 1975-2002
1
Independence and Civil War, 1975-1994
1
South African Incursions, 1978-1990
1