How do you remove caffeine from coffee?

"a recent Pew study showed that over three-quarters of those surveyed [in the US] opted for coffee over tea"

Looking at the linked data [1], though they say "overall, more countries prefer coffee", it looks it's mostly a bunch of smaller countries upping the raw number of coffee-drinking countries (assuming their statement is accurate). Given that the most populous countries, India and China, are both 75-100% tea drinkers, it seems that leaves have the upper hand over beans afterall.

(No revelative point here, just being a dataphile.)

(And here's a different tea-coffee graph from the same source Euromonitor International, this time about correlations and retail values: http://blog.euromonitor.com/2014/02/the-worlds-biggest-coffe...)

[1] http://www.economist.com/blogs/graphicdetail/2013/12/daily-c...