Some St. Paddy's (not Patty's) Day Fun Facts!
4: Ireland's global rank in beer consumption per capita in 2011, with 101.1 liters.
15: The U.S. rank in beer consumption per capita, with 76.6 liters.
34.5 million: People in the U.S. with Irish ancestry, as of 2011.
530: Calories in a 12-ounce McDonald's limited-edition green Shamrock Shake.
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