Usage History of 'ratios'

The following chart shows how frequently 'ratios' appeared in printed materials over time. For example, the word 'ratios' occurred 2 times in books in 1678 and 352,615 times in 2008. From 1678 to 2008, the word 'ratios' was used a total of 11,957,156 times in books scanned by Google. See Reference: Google Ngram project.

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