They said last year was a little over 20 million at my memorial talk.
I remember when more people than usual came back in 2014 because of the "100th anniversary of the Kingdom" and the fear that it meant something. The number counters at HQ erroneously thought this was a trajectory that could be counted on and projected that 2015 would top 20 million, even writing an article about it. But that year the attendance actually dropped for the first time since I don't know when, if ever.
You'd think they would've deleted this article by now, just like they deleted the one about the Telly Awards and the Jared Kushner video, but I guess somebody forgot.