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09/02/1966 The NHL doubles in size

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Memories: The NHL doubles in size in 1966

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NHL's Expansion Era Begins

The NHL added six new teams to double its size at the NHL expansion. The league then increased to 18 teams by 1974 and 21 teams in 1979. Between 1991 and 2000, the NHL further expanded to 30 teams. It added its 31st team in 2017 and has approved the addition of the 32nd team in 2021.
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