DaveMage
Slumbering in Tsar
Turjan said:The 6 million came up this year from last years marketing study, together with the claim of continual growth. If someone has the search function, he should be able to find it on this board somewhere.
I found this, which was quoted off of the amazon.com listing for D&D for Dummies (Link) :
Market research indicates that 4 million American males, ages 8 to 45, play Dungeons & Dragons, while 7.6 million who haven’t played say they want to learn how. The popularity of recent sci-fi and fantasy movies has also boosted interest. D&D is complex to learn, and this friendly guide helps the curious locate a game, understand the rules, choose or create a character, follow proper game etiquette, and even move up in the hierarchy to become a Dungeon Master. The four-page foldout cheat sheet will include markers and a model dungeon layout that serves as an actual game board, allowing readers to play using this book and nothing else.
And then Charles Ryan confirms that this is a US only figure here:
http://boards1.wizards.com/showthread.php?p=5061177#post5061177