dw does most of the laundry in our house. i'll do my own clothing if she's really busy and i see that i'm running out of socks or tighty-whiteys or something.
i'd have to say she does about 2 loads a day, about 6 days a week. sometimes a third load. they are usually small loads; she seems obsessed with having everything clean to be able to wear at any time.
my wife is a clothes horse, and the little guy likes to wear as much of his food as he eats, so between the two our son wears a dozen different pairs of pants and shirts just about every day.
including my clothes (which she complains are too big and heavy so i usually fold and put away my own
), my son's and her clothing, there's a lot of wash to do.