The line graph shows the changes in the proprietorship of electrical appliances and the amount of time spent doing housework in households in one country between 1920 and 2019.
With regard to refrigerators, 100% of households used them in 1980, and this remained constant until 2019, whereas the same is true for vacuum cleaners in 2000. In the case of washing machines, a zigzag pattern of rise and fall can be observed, coinciding with vacuum cleaner usage at 70% of households in 1960. In contrast, washing machine usage corresponds with refrigerator usage at 50% of households in 1940. Moreover, an incremental pattern can be observed, though there are some fluctuations in the proprietorship of electrical appliances, whereas a decremental pattern can be observed in the amount of time spent doing housework, which includes washing clothes, preparing meals, and cleaning in each household in the specific country between 1920 and 2019, with a maximum of 50 hours of housework per week.
To conclude, besides the fluctuations in ownerships of electrical appliances, there is an upward trend; otherwise, there is a downward trend in the duration of time spent doing housework in households in the specific country between 1920 and 2019.