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The 7th Decade 2008 – 2018
The 6th Decade 1998 – 2008
The 5th Decade 1988 – 1998
The 4th Decade 1978 – 1988
The 3rd Decade 1968 – 1978
The 2nd Decade 1958 – 1968
The First Decade 1947 – 1958
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