Usage History of 'propping'

The following chart shows how frequently 'propping' appeared in printed materials over time. For example, the word 'propping' occurred 2 times in books in 1572 and 17,389 times in 2008. From 1572 to 2008, the word 'propping' was used a total of 330,101 times in books scanned by Google. See Reference: Google Ngram project.

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