The charts below show the changes in ownership of electrical appliances

The first line graph below illustrates the proportion of 3 different electrical devices which each household owned,

while

the accompanying line graph describes the total weekly housework hours per household in one nation from 1920 to 2019. Looking more closely at the trend of the graphs, it can be clearly seen that an upward trend is observed for all 3 electrical appliances,

while

a downward trend is seen for the total number of housework hours.

According to

the first line chart, in 1920 washing machine was the most popular electrical appliance, 40%, followed by vacuum

cleaner

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cleaners

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and

refrigerator

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refrigerators

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. On top of that, in 1920, the percentage of washing

machine

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machines

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represented a slight increase to around 75% in 2019,

while

there was a significant rose to reach a peak at 100% in 2000, after that the figure remained constant at 100% until 2019.

Moreover

, the figure of vacuum cleaner ownership grow dramatically from approximately 2% in 1920 to 80% in 1960,

then

there was a plateau at 100% between 1960 and 2019.