Economists estimate that the average man or woman bought a new outfit of clothes only once a year. Scarcely half the homes in many cities had electric lights or a furnace for heat. Only one city home in ten had an electric refrigerator. This unequal distribution of income meant that most Americans could not participate fully in the economic advances of the 1920s. Many people did not have the money to purchase the flood of goods that factories produced. The prosperity of the era rested on a fragile foundation.