Yep, the stats in the US heavily favor coffee since around the time of the revolution. In certain places, it was unpatriotic to drink hot tea. About 85% of tea is iced in the US[1].

1) http://www.teausa.com/14655/tea-fact-sheet

ps: the fact sheet in 1 seems to be the basis of a whole lot of magazine articles. It seems like "tea facts" is quite the fill-in article.