Era
1968-
8
1944-
4
1953-
4
1966-
4
1973-
4
1977-
4
1979-
4
1946-
3
1947-
3
1964-
3
1965-
3
1970-
3
1974-
3
1976-
3
1940-
2
1945-
2
1954-
2
1955-
2
1957-
2
1960-1980
2
1975-
2
1980-
2
1983-
2
1984-
2
1929-2022
1
1939-1945
1
1940-2020
1
1942-
1
1948-
1
1950-
1
1958-
1
1961-
1
1962-
1
1967-
1
1969-
1
1971-
1
1978-
1
1981-
1
20th century
1
Since 1900
1
Since 1980
1