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

The second

chart

depicts the number of

hours

of housework in each family on a weekly basis from 1920 to 2019, and the first

chart

compares the figures for the percentages of

electrics

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electricity

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used by three electrical appliances in the same period of time.

Overall

, the number of

hours

of family doing housework experienced a significant decline over the whole period,

while

the percentage of

electric

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electricity

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used by

refrigerator

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refrigerators

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had the greatest growth of all.

According to

the second

chart

, the number of

hours

of housework decreased significantly from its peak of 50

hours

in 1920 to 20

hours

in 1960, followed by a slight decline until 2019.

According to

the first

chart

, in 1920,

washing

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the washing

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machine

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machines

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had the largest units of electric consumption of all electrical appliances. It increased gradually from 40 in 1920 to 70 in 1960, fluctuating around 70 over the following years.

In contrast

,

refrigerator

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refrigerators

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rocketed dramatically from merely 1 in 1920 to 100 in 1980, followed by a levelling off. Regarding vacuum

cleaner

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cleaners

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, it

also

rose rapidly from 30 in 1920 to 100 in 2000, which reached a joint point with

refrigerator

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refrigerators

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.

Then

it remained unchanged until 2019.