Era
1960-
12
1976-2000
4
1989-
4
Since 1960
4
1970-
3
1975-
3
21st century
3
Since 1991
3
1945-1966
2
1945-1992
2
1979-
2
1989-1992
2
1991-
2
Since 1975
2
1945 - 1992
1
1945-
1
1945-1989
1
1947-
1
1959-1990
1
1966 - 1997
1
1966-1997
1
1970 - 1994
1
1970-1982
1
1970-1994
1
1976 - 2000
1
1976-
1
1979-1997
1
1980 - 1991
1
1980-
1
1980-1991
1
1981-1990
1
1982-1994
1
1988
1
1990-
1
1992-
1
2000-2099
1
Since 1945
1
Since 1970
1
Since 1981
1
Since 1989
1