The two line charts illustrate the proportion of families owning the electrical appliances and the average hours per family spent on doing household chores each seven days from 1920 to 2019.
Overall, while the ratio of households equipped with washing machine, refrigerator and vacuum cleaner represents an upward trend, the amount of time spent on washing clothes, preparing meals and cleaning decrease significantly through 100 years.
Getting back to the details, the percentage of families having washing machines and vacuum cleaners was up to 40% and 30%, whereas the portion of those owning fridges was nearly 0% before soaring overwhelmingly to 100% in 60 years later and until 2019. The proportion of households with vacuum cleaner described an eventual increase through years and reached the peak of 100% in 2000. However, the ratio of residents possessing washing machines depicts a light reduction from 70% to approximately 64% and continued to climb to nearly 73% in 2019.
Conversely, the number of doing housework hours fell dramatically from 50 hours in 1920 to 20 hours in 1960. In the period of 60 years later, the amount of doing household chores per week continued to dive marginally in each residents.