Usage History of 'paranoia'

The following chart shows how frequently 'paranoia' appeared in printed materials over time. For example, the word 'paranoia' occurred 2 times in books in 1705 and 67,993 times in 2008. From 1705 to 2008, the word 'paranoia' was used a total of 1,378,487 times in books scanned by Google. See Reference: Google Ngram project.

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