The line graphs presents the percentage electrical devices ownership including washing machine, refrigerator and vacuum cleaner and total time they spent on domestic work in families in one nation between 1920 and 2019. In general, the percentage of families which possessed electrical appliances increased significantly while the amounts of time of doing housework steadily decreased.
Washing machines were owned by 40% of total families in 1920 and continued to grow to 60% in 1940, 70% in 1960. It slightly dropped to 60% in 1980 but continued to surge to 70% in 2000 and more than 70% in 2019, respectively. Meanwhile, 30% families in 1920 had vacuum cleaner and grew steadily to 50% in 1940, 70% in 1960, 90% in 1980 and peaked to 100% in 2000 through 2019. Whereas the most dramatic change happened to refrigerator which owned by 0% families in 1920 and rose to nearly 55% in 1940, 90% in 1960 and reached to 100% from 1980 to 2019.
In contrast, total time that families spent in domestic work dropped from 50 hours in 1920, it continued to drop to almost 40 in 1940, 20 hours in 1960, nearly 15 hours in 1980 and 2000 and finally reached to 10 hours in 2019.