One of the line charts delineates the alterations in households with three electrical equipments, and the other depicts the hours spent on chores in households in one society from 1920 to 2019.
overall, the ownership of three electrical equipments, including a washing machine, a refrigerator and a vacuum cleaner, is measured in percentage. As the charts illustrate, by increasing in the number of electrical ownerships, the hours spent on doing chores significantly decrease.
The proportion of households having a washing machine notably escalates from 0% to 90% during only 40 years. Subsequently, from 1960 to 1980 it continued to rise 10 more percent and remained steady on 100% from 1980 to 2019, which shows that there can be a washing machine found in all houses. In addition, the percentage of vacuum cleaner ownership significantly rises from 30% in 1920 to 100% in 2000 and plateaued until 2019. Moreover, the proportion of households with refrigerator increased from 40% in 1920 to 70% in 1960; subsequently, it decreased slightly less than 10% before it rises to more than 70% in 2019.
As the other chart illustrates, the time spent on housework sharply diminished over the years; Considerably decreasing from 50 hours a week in 1920 to 20 hours in 1960, then declineing about five more hours in 1984. After that, the time considered for doing chores remained stable until 2000 prior to its fall to 10 hours a week.