Usage History of 'gratitude'

The following chart shows how frequently 'gratitude' appeared in printed materials over time. For example, the word 'gratitude' occurred 2 times in books in 1524 and 639,975 times in 2008. From 1524 to 2008, the word 'gratitude' was used a total of 12,063,333 times in books scanned by Google. See Reference: Google Ngram project.

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