seventy years
Examples
Seventy years ago this November, Vladimir Lenin created the modern totalitarian state, transforming simpler forms of tyranny into history's most sophisticated apparatus of rule by terror.
The society of ]]organizations\\ is new-only seventy years ago employees were a small minority in every society.
To be seventy years young is sometimes far more cheerful and hopeful than to be forty years old.
You cannot control what you love--you watch it driving recklessly towards the broken bridge, the torn-up track, the horror of seventy years ahead.
Conducting is, after all, a difficult business – one has to be seventy years of age to realise this fully!
A person can study for seventy years and at the end die a fool.