The first line graph gives information on how many households own three types of electrical home appliances in the period from 1920 to 2019 (vacuum cleaner, washing machine and refrigerator) in one state.

The first line graph gives information on how many households own three types of electrical home appliances in the period from 1920 to 2019 (vacuum cleaner, washing machine and refrigerator) in one state. The second chart illustrates the amount of time spent on housework per week in the corresponding period. Overall, the increase in electrical home devices ownership correlates with the decrease in time that families dedicated on different types of housework. In the beginning of the period 40% of the families owned a washing machine, 30% had a vacuum cleaner and almost none had a refrigerator. Between 1920 and 1960 there was a sharp growth in all three categories, as a result 70% of households had purchased all types of devices by 1960. Since 1960 refrigerators and vacuum cleaners continued to rise in numbers consequently achieving 100% coverage in 2000. On the contrary, the number of washing machines stayed relatively steady with some fluctuation throughout the remaining period. With regard to second chart, an average household spent approximately 50 hours per week on washing clothes, cooking and cleaning in 1920. Number of hours demonstrated a sharp decrease between 1920 and 1960. Since 1960 the figure fluctuated, reaching the lowest point in 2019 at 10 hours.