Usage History of 'efficiencies'

The following chart shows how frequently 'efficiencies' appeared in printed materials over time. For example, the word 'efficiencies' occurred 2 times in books in 1644 and 65,758 times in 2008. From 1644 to 2008, the word 'efficiencies' was used a total of 1,764,233 times in books scanned by Google. See Reference: Google Ngram project.

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