Era
1969-
Since 1969
16
20th century
14
Since 1900
11
21st century
8
1945-1989
4
1960-1980
4
1961-1969
4
1969-1974
4
1981-1989
4
2000-2099
4
1945-
3
1946-
3
1952-
3
1957-
3
1965-
3
1966-
3
1972-
3
1974-1977
3
1989-1993
3
Civil War, 2011-
3
1900-2099
2
1944-
2
1951-
2
1956-
2
1960-
2
1963-
2
1964-
2
1967-
2
1968-
2
1970-
2
1971-1981
2
1973-
2
1977-1981
2
1980-2020
2
1982-
2
Since 1960
2
Since 1961
2
active 19th century
2
1887-1986
1
1900-1999
1
1911-1994
1
1914-1974
1
1930-
1
1931-
1
1932-2018
1
1934-
1
1936-2002
1
1939-
1
1943-
1
more ...