The residents of Vatican City drink more wine per person than any other country, at least as of 2014 — 74 liters per year, or about 105 bottles, twice the amount drunk by the average person in France and three times that in the U.K.
The state’s tiny size — just 800 people — means that such figures are easily skewed, and Vatican residents tend to be old, male, and highly educated and to eat in large groups, all of which can contribute to higher wine consumption. (So does the use of ceremonial Communion wine.)
An overlooked additional factor: Wine sold in the Vatican supermarket is subject to a lower tax than in Italy — which attracts customers from the broader vicinity and may drive up the numbers.