1975 - Present

Presidents

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

Technology

1977
1979
1981
1983
1990
1990
1997
1998
2006
2007

Legislation, Amendments, Supreme Court

1980
1980
1981
1989
1992
2012

World Events (relevant to the U.S.)

1976
1980
1990
1999
1999
2003

Society and Culture

1975
1979
1980
1980
1990
1992