1974-present

Main

president

1974 - 1977
1977 - 1981
1981 - 1989
1989 - 1993
1993 - 2001
2001 - 2009
2009 - Present

landmark decisions

1973 - 2006
1974
1997
2000
2006

World Events

1974
1975
1975
1977
1997

Technology

1975
1978
1979
1981
1983
2001

Society and culture

1982
1986
1989
1992
1996