Usage History of 'unsafe'

The following chart shows how frequently 'unsafe' appeared in printed materials over time. For example, the word 'unsafe' occurred 2 times in books in 1568 and 110,850 times in 2008. From 1568 to 2008, the word 'unsafe' was used a total of 2,418,556 times in books scanned by Google. See Reference: Google Ngram project.

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