+1 to Purebred’s comments.
Windshield washer use is highly dependent on where someone lives, and what type of weather/environmental conditions he/she has to deal with.
I still remember our first car with windshield washers–a '66 Ford Galaxie 500. The reservoir was a vinyl bag, attached to the inner fender.
I think that it probably held only ~ 1 qt–or maybe 1.5 qts–and in the winter, when dealing with a constant coating of road salt, I would frequently use-up the entire contents of that bag w/in a couple of hours.
Nowadays, I probably only have to buy another gallon jug of ww fluid every 10 months or so.