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

The line graphs below give information about the

percentage

of households with electrical devices and the number of hours of people doing housework per week in one country from 1920 to 2019.

Overall

, more and more households start using different kinds of electrical devices including washing

machine

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machines

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,

refrigerator

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refrigerators

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, and vacuum

cleaner

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cleaners

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. We can see since 1920 the

percentage

rose gradually until 2019.

By contrast

, the hours of housework per week in

household

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the household

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stably decreased.

It is clear that

in 1920, a great number of families start using

refrigerator

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refrigerators

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, and the

percentage

have a dramatic increase

by

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of

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90% in the 40 years period. The

percentage

of washing

machine

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machines

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and vacuum

cleaner

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cleaners

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went up slowly from nearly 40% to 70% in 1960,

however

, the

percentage

of vacuum

cleaner

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cleaners

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rapidly rose up and reach almost the same level as

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a refrigerator

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refrigerator

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refrigerators

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.

On the other hand

,

according to

the line graph, people spent less and less time

to clean

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cleaning

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their

home

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homes

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. From 50% to around 10% between 1920 and 2019.