I'd say I average around four, more in the warmer months.
Look into Tide Hygienic Clean. One pod is the size of 2-3 of the regular ones, and they really do the job! And cheaper than using 3 of the regulars.three pods
My mom does at least a dozen loads every week. Her own laundry is maybe one or two but she also does my (adult) brothers' laundry so that's a couple more loads for each.5 to 6, on average. And I don't know how two people make such large amounts of laundry.