The chart below show the changes in ownership of electrical appliences and amount of time spwnt doing housework in households in one country between 1920 and 2019.

The line graphs illustrate changes in ownership of three household machines and the amount of time spent doing housework each week in one country from 1920 to 2019.

Overall

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, all three electrical appliances increased substantially over the period,

while

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the number of

hours

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spent doing housework fell significantly. In 1920, only around 5% of households owned a refrigerator, but

this

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figure rose sharply to 50% in 1940 and 90% in 1960. It

then

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reached 100% in 1980 and remained at

this

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level until 2019.

Similarly

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, in the beginning, vacuum cleaner ownership was 30%, before it rose steadily, reaching 100% in 2000 and remaining stable

thereafter

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.

In contrast

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, washing machine ownership grew from 40% to 70% by the end of the period, despite a slight decline from 70% to 65% between 1960 and 1980.

On the other hand

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, households spent approximately 50

hours

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per week on housework in 1920.

This

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figure dropped to 20

hours

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a week in 1960. It

then

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declined more gradually to around 15

hours

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, where it remained unchanged until 2000, before reaching a low of 10

hours

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in 2019.