Usage History of 'unconstrained'

The following chart shows how frequently 'unconstrained' appeared in printed materials over time. For example, the word 'unconstrained' occurred 2 times in books in 1644 and 30,825 times in 2008. From 1644 to 2008, the word 'unconstrained' was used a total of 688,327 times in books scanned by Google. See Reference: Google Ngram project.

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