Usage History of 'ciao'

The following chart shows how frequently 'ciao' appeared in printed materials over time. For example, the word 'ciao' occurred 2 times in books in 1774 and 3,899 times in 2008. From 1774 to 2008, the word 'ciao' was used a total of 57,605 times in books scanned by Google. See Reference: Google Ngram project.

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