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

The first graph displays the percentages of

households

that owned electrical appliances in one country from 1920 to 2019,

while

the

second

graph illustrates how much time

households

in that country spent doing housework during the same period.

Overall

,

it is clear that

the ownership of all three types of electrical appliances in

households

increased during

this

period, with that

of

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refrigerators having the greatest growth. At the same time, the amount

of

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spent on housework decreased. Looking at the graphs more closely, one can see that the proportion of homes with refrigerators was nearly 0% in 1920, but after that time the figure increased rapidly and eventually reached 100% in 1980.

Along

with

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, the ownership of vacuum cleaners

also

increased gradually and

finally

reached 100% in 2000.

In contrast

, the proportion of owning washing machines in

households

was the highest among three electrical devices in 1920, but in 2019, it was the lowest percentage.

Furthermore

, the number of hours doing housework per week fell significantly from 50 to 15 hours between 1920 and 1980. After that, it slightly fell to around 10 hours in 2019.