Usage History of 'certificating'

The following chart shows how frequently 'certificating' appeared in printed materials over time. For example, the word 'certificating' occurred 8 times in books in 1810 and 210 times in 2008. From 1810 to 2008, the word 'certificating' was used a total of 13,718 times in books scanned by Google. See Reference: Google Ngram project.

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