The provided line graphs illustrate the proportion of households with electrical appliances and the duration of housework per week from 1920 to 2019.
Overall, percentages of households with refrigerators and vacuum cleaners showed an upward trend, whereas the number of hours of housework per week experienced a steady decrease throughout the period.
In 1920, the percentage of households with washing machines, refrigerators and vacuum cleaners stood at 40%, 30%, 0% respectively, before increasing to 60%, 50% and 55% in that order in 1940. Two decades later, the share of refigerators increased significantly to 90%, whereas the percentage of washing machines and vacuum cleaners shared the same proportion, making up 70% of the total. The proportion of households with refrigerators reached its peak in 1980, accounting for 100%, while the share of vacuum cleaners grew to 90%, before growing to 100%, and sharing the same percentage until the end of the period. In contrast, the percentage of houses with washing machine decreased to 65% in the year 1980. Moreover, this percentage rose steadily, making up approximately 75% in 2019.
