Usage History of 'roadblocks'

The following chart shows how frequently 'roadblocks' appeared in printed materials over time. For example, the word 'roadblocks' occurred 2 times in books in 1777 and 22,072 times in 2008. From 1777 to 2008, the word 'roadblocks' was used a total of 383,218 times in books scanned by Google. See Reference: Google Ngram project.

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