Usage History of 'oligopoly'

The following chart shows how frequently 'oligopoly' appeared in printed materials over time. For example, the word 'oligopoly' occurred 2 times in books in 1867 and 16,809 times in 2008. From 1867 to 2008, the word 'oligopoly' was used a total of 675,088 times in books scanned by Google. See Reference: Google Ngram project.

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