In 1990 it was about 25k with prices about 150k
House prices are about 100k too high, they should be 300k not 400k
One reason for this is more people rely on two incomes to pay for housing, so more money is available for housing, so money transfers from future debt of millenials to existing assets of boomers and gen x.
But on top of that it means two incomes means harder to have kids due to child care.