I think you re over using ngrams which are not selective on reliability of sources and are over selective for published sources versus everyday usage e g shops menus online recipes Currently predominates in published material is not quite the same as usually Ngrams are useful for example to prove existence and notability but once again it needs to be said that we should rely on good dictionaries since lexicographers do research usage By the way I made that suggestion not to make any assertions of my own but to help us to avoid making a too strong statement about regional and temporal variations that we probably can t reliably source