In Medieval England, quite a lot it seems. More than even I suspected:
Calculations based on the amount of barley used for brewing in Conventry during the 1520s indicate that the average consumption of ale was 17 pints of strong ale a week for every man, woman, and child in the town. Statistics for English consumption of beer late in the seventeenth century indicate an annual consumption per person of 832 pints. To put this figure in context, in 1976 the amount was only 209 pints, one fourth the earlier figure.
Keep in mind that milk and water, beverages that we take for granted, were not options due to various health problems associated with not knowing about pesky things like bacteria. But still…17 pints per week for everyone in the town?
I so enjoy articles such as these.