Usage History of 'leapfrogs'

The following chart shows how frequently 'leapfrogs' appeared in printed materials over time. For example, the word 'leapfrogs' occurred 2 times in books in 1889 and 283 times in 2008. From 1889 to 2008, the word 'leapfrogs' was used a total of 6,233 times in books scanned by Google. See Reference: Google Ngram project.

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