Usage History of 'biros'

The following chart shows how frequently 'biros' appeared in printed materials over time. For example, the word 'biros' occurred 2 times in books in 1733 and 702 times in 2008. From 1733 to 2008, the word 'biros' was used a total of 15,724 times in books scanned by Google. See Reference: Google Ngram project.

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