Era
1960-
78
1994-
39
20th century
29
21st century
13
1945-1960
11
1948-1994
9
1978-
8
1991-
8
1989-1994
7
1978-1989
5
1918-
4
1945-
4
1961-1978
4
1948-1961
3
1961-
3
1961-1994
3
1989-
3
1884-1960
2
1948-
2
1975-
2
1836-1909
1
1853-1902
1
1859-1941
1
1888-1918
1
1898-1967
1
1901-1966
1
1909-
1
1909-1961
1
1917-
1
1923-
1
1935-2015
1
1945-1989
1
1961
1
1970-1988
1
1970-1994
1
1974-
1
1985-1995
1
1988-
1
19th century
1
2001-
1
Civil War, 1975-
1
Civil War, 1983-
1
South African Incursions, 1978-1990
1