1945: at the top of the wave
Back to the future (1946-1950)
Getting the habit (1950-1953)
Nothing so simple (1953-1956)
Settling in for the long haul (1956-1961)
The burden and the glory (1961-1963)
The burden felt (1964-1969)
Blight on the battlefield (1969-1975)
In the hollow of the wave (1975-1981)
Hard pounding (1981-1985)
Shaking loose (1985-1989)
Unintended consequences (1989- ).
