Usage History of 'escalator'

The following chart shows how frequently 'escalator' appeared in printed materials over time. For example, the word 'escalator' occurred 6 times in books in 1600 and 16,063 times in 2008. From 1600 to 2008, the word 'escalator' was used a total of 387,608 times in books scanned by Google. See Reference: Google Ngram project.

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