According to Daily Infographic.com, total world beer production, circa 2009, was 148 billion liters. That's one billion, two hundred sixty-one million, two hundred and eight thousand, five hundred and two US barrels, give or take. Adjusting for some breakage, that works out to 92,059,014 cases of twenty-four 12-ounce bottles.
By 2015, one in every four beers drunk will be in China. Even so, last year, China, by its sheer size of population (1.3 billion), was only 36th in terms of per capita consumption. The United States, at 81.6 liters per capita (approximately 21 gallons), was 13th.
Daily Infographic culled its data from BeverageMarketing.com and Wikipedia. Reference the statistics with a grain of salt, or should I say, a barleycorn.