The two charts display the proportion of the users of three electrical appliances differently and total hours which they did their housework weekly from 1920 to 2019.
Overall, three categories of the appliance experience an ascent trend, but refrigerator and vacuum cleaner had been the prevalent tools compare to the washing machine. Apparently, as the users of these electrical devices rose, the number of hours people washing clothes, preparing meals, and cleaning decreased during the given period.
According to the first chart, refrigerator and vacuum rose up rapidly without any downward lines. Begin with the lowest percentage with virtually 0% of the users, the rate of refrigerator ended up with the highest percentage with 100% users since 2000. It is also emerged a dominance over the others until 2019. The owner of vacuum shared similar pattern, rose by approximately 70% between 1920 and 2000 then had a stable trend up to the end of the period. However, people who used washing machine showed the highest rate from 40% in 1920, and then went up in a fluctuating manner to just about 60% by 2019 after had a convergence with vacuum cleaner in 1960.
In terms of the total hours of housework per week, its trend moved downwards. In 1920, people did their household about 50 hours every week, it was then going down to around 10 hours every week in 2019.