How Many D&D Players Are There Worldwide?

I've been playing D&D for a long time. But apparently, I'm not the only one. There is an ever growing number of Dungeons & Dragons players out there. But, how many D&D players are there worldwide? 

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Thread by @ZealZaddy on Thread Reader App – Thread Reader App

Was I the only one who thought Eldritch Blast looked blue for most

Why is World of Darkness the RPG less popular than D&D? - Quora