The given line graphs indicate the transition of electrical devices between people and the length of time for house chores in families in one country from 1920 to 2019.
Overall, the percentages of households with electrical appliances witnessed a growth through the analyzed period, despite there were unchanged points. The number of hours of housework per week decreased significantly in every family between 2 years.
Refrigerator and vacuum cleaner registered a significant climb in 1960 and 1980. While the number of refrigerators used rocketed from the bottom to 90%, the consumption in vacuum cleaner tripled its percentage in 1980, from 30% to the same point with refrigerators. Both devices had the slightly increase in their next years, then remained unchange up to 2019 with 100% usage. Besides, the number of washing machine had two minor periods of growth, one of 30% from 1920 to 1960 and one to about 75% between 1980 and 2019. In the middle of two periods above, there was a minimal drop of about 8%.
Looking to the second line graph, it is obvious that the amount of time spent doing housework in household plunged dramatically, because of the increase of technical devices. The period between 1920 and 1980 saw the percentage soared from 50% to 20%. In the next period up to 2019, a minimal drop to 10% was seen, despite there was an 10 years period of unchanged number.