Usage History of 'ai'

The following chart shows how frequently 'ai' appeared in printed materials over time. For example, the word 'ai' occurred 2 times in books in 1507 and 251,685 times in 2008. From 1507 to 2008, the word 'ai' was used a total of 7,034,458 times in books scanned by Google. See Reference: Google Ngram project.

See also:

Words starting with a,b,c...
Words ending with a,b,c...
Words starting & ending with a,b,c....