The charts below show the changes in ownership of electrical appliances and amount of time spent doing housework and households in one country between 1920 and 2019.

The first chart illustrates the ratio of residents of a country who have electrical apparatus

such

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as washing

machines

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, refrigerators, and

vacuum

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cleaners in their houses from 1920 to 2019. The change in the amount spent on housework for a family is given

by

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in

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the

second

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chart.

Overall

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, the ownership of each machine increased over the years.

Additionally

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, all citizens have at least one refrigerator and one

vacuum

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cleaner at their residency in 2019.

However

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, the washing machine could not reach every home

at the end

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of

this

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year. It is evident that the time consumption

on

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of

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housework activities decreased over the years

by

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of

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the rise of technological instruments

at

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in

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houses.

While

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refrigerator was in none of the houses in 1920, the proportion of washing machine and

vacuum

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cleaner were 40% and 30% respectively.

Moreover

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, refrigerator ownership peaked at 100% in 1980 and stayed there until 2019.

Similarly

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, the

vacuum

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cleaner was

on

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in

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everybody's home in 2020 by arising linearly between 1920 and 2020.

On the contrary

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, the proportion of washing

machines

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changed from 40% to almost 71% over the years.

Additionally

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, the

uprise

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rise

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of washing

machines

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was not steady as others. In 1980, only a decline for each appliance happened in washing

machines

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by a dip of about 62%. The time spent on housework was 50 hours per household in 1920.

By

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With

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the diffusion of electrical devices,

this

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amount decreased steadily to 20 hours until 1960.

Then

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the velocity decreased;

hence

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, the duration of house activities reached the dippest level

with

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of

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approximately 10 hours in 2019.