The line graphes illustrate the percentage of household electricial appliences and the number of hours that are spent on using them in a residence from 1920 to 2019.
Overall, the proportion of all three kinds of the households steadily increased over the period. Meanwhile the amount of time spending on the housework per week declined.
The percentage of eletrical refrigerators was at approximatelly zero percent in 1920, but then there was a massive resurgence to one hundred percent in 1980, that stayed to 2019. There were thirty percent of vacuum cleaners with ectrical appliances at the beginning of the period with a constant rise to the highest point in 2000 and 2019. Additionally, the proportion of electronic washing machines was fourty percent in 1920, which achieved seventy percent in 1960. Then, after a slight decrease it reached the maximal point at less than eight percent at the end of the period.
It can be seen fron the second chart that there was a dramatic drop of the number of hours spending on completing home duties between 1920 and 1960, from fifty hours to twenty hours, respectively. Then, the proportion leveled out at just under twenty hours and finally declined to ten hours in 2019.