The two line graphs compare the percentage of houses which owned electrical appliances and how much time of housework which was costed in households in a specific country from 1920 to 2019.

These two line graphs compare the percentage of

households

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in a given country that own appliances and the cost of time spent on household chores from 1920 to 2019.

It is clear that

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over a period of almost a century, people spent less time per

week

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on household chores with the help of three appliances: washing machines, refrigerators and hoovers.

Accordingly

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, the holding rate of the above-mentioned appliances showed an

overall

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increase over the same period. Starting with the 50 hours a

week

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spent on housework in 1920, only 30% of

households

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owned a hoover, the rate of holding

of

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washing machines was only 40% and almost no

households

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used hoovers to clean their houses. The

next

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century saw a gradual reduction in the number of hours spent on housework per

week

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, reaching a low of almost 10 hours per

week

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by 2019. From almost zero in 1920, more and more

households

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bought Hoover, which led to a rapid increase in hoover ownership, reaching a peak of 100% in 1980. The same trend is shown in the proportion of

households

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owning a washing machine, the latter reaching 100% in 2000, a decade after washing machines. ownership of refrigerators rose sharply between 1920 and 1960,

then

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fluctuated over the

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59 years, reaching around 75% in 2019.