The provided line graphs illustrate the changes in the percentage of households owning three specific electrical appliances and the number of hours spent on housework per week in a particular country from 1920 to 2019. Overall, there was a substantial increase in the ownership of all three electrical appliances, most notably refrigerators, which coincided with a dramatic decrease in the weekly hours dedicated to housework over the nearly century-long period. In 1920, washing machines were the most common appliance, found in approximately 40% of households, while vacuum cleaners were owned by about 30%, and refrigerators by less than 10%. However, refrigerator ownership saw a meteoric rise, reaching nearly 90% by 1960 and almost 100% by 1980, maintaining this saturation level until 2019. Vacuum cleaner adoption also experienced significant growth, surpassing washing machines around 1960 and peaking at just under 90% by 2000, where it largely remained. By contrast, washing machine ownership increased more modestly, reaching a high of around 65% in 1980 before a slight dip and then a final rise to just over 70% in 2019. Concurrently, the average hours spent on housework per household fell considerably. Starting at 50 hours per week in 1920, this figure steadily declined to approximately 35 hours by 1940 and further to 20 hours in 1960. The downward trend continued, stabilising briefly at 15 hours between 1980 and 2000, before reaching its lowest point of just under 10 hours per week by 2019. This substantial reduction in domestic labour hours clearly correlates with the widespread adoption and increasing prevalence of electrical appliances, which mechanised many household tasks.
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