> A thought occurred: maybe there are now fewer people per household. This however does not hold up to scrutiny either what do you mean? it makes perfect sense

> A thought occurred: maybe there are now fewer people per household. This however does not hold up to scrutiny either what do you mean? it makes perfect sense given the definition of household that it'll be extremely similar to the number of houses. The ratio you're talking about is exactly a reduction in the average number of people per household.