This list is useless. If you compared two families using this same system: * Family A - 1 worker, 40 hours per week, 1 non-worker * Family B - 2 workers, 20

This list is useless. If you compared two families using this same system: * Family A - 1 worker, 40 hours per week, 1 non-worker * Family B - 2 workers, 20 hours per week each You'd get an average of 40 vs 20, which makes it appear as though Family A works "more" than Family B.