Yes, but the movie undoubtedly brought them into more frequent use, or at least have made it so that more people 'get them', so to speak. Sorry, I thought that was part of the idea.
Most of my high school class, for example, knew the movies well, even though only a handful had read the books and only a fraction more will probably ever read them in the future (at least, in my opinion).
(Finds it strangely amussing that 'the Books' is now a proper noun...
)