The line graphs illustrate the evolving patterns of household electrical appliance ownership and the corresponding time dedicated to housework in from 1920 to 2019.
In general, there was a noticeable surge in the ownership of various electrical appliances throughout the period, which directly correlates with a dramatic reduction in the average number of hours spent on household chores.
In 1920, 30% of households owned vacuum cleaners and 40% washing machines. However, ownership began to rise steadily , with refrigerators and vacuum cleaners experiencing the most significant growth. By 1960, approximately 90% of households possessed a refrigerator, a figure that reached virtually 100% by 1980. Similarly, vacuum cleaner ownership soared from about 30% in 1920 to over 90% by 1980, achieving near-universal penetration by 2019. The washing machine also saw a substantial increase, .
the average weekly hours spent on housework witnessed a steep decline. Starting at a considerable 50 hours per week in 1920, this figure plummeted to . The downward trend continued, with housework hours stabilising at 10 hours per week by 2019,
