Usage History of 'perforated'

The following chart shows how frequently 'perforated' appeared in printed materials over time. For example, the word 'perforated' occurred 2 times in books in 1575 and 64,938 times in 2008. From 1575 to 2008, the word 'perforated' was used a total of 2,357,791 times in books scanned by Google. See Reference: Google Ngram project.

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