Line graphs show data on the number of household devices and the average cleaning time spent per week in the country between 1920 and 2019.
According to the line graphs, it can be noted that an increase in the number of electrical devices led to a decrease in the amount of time that people spent on housework.
Based on the first line graph, in the first 20 years alone, the number of refrigerators has rapid increased by half, and the number of washing machines has increased by a fifth. The number of vacuum cleaners has been growing steadily for 80 years and in 2000 they were already in every family in this country. After 1940, there was a sharp increase in the number of refrigerators, and by 1980 they were also in every family. The number of vacuum cleaners has been growing steadily for 80 years and in 2000 they were already in every family in this country. After 1940, there was a rapid increase in the number of refrigerators, and by 1980 they were also in every family. The number of washing machines grew gradually, and at one point even fell to two-thirds, but by 2019 their number was only 75 percent.
The second line graph shows a direct relationship between the purchase of basic household appliances and the amount of time spent. The amount of housework has dropped dramatically from a high 50 hours per week in 1920 to just 10 hours per week in 2019.