The pie charts illustrate the variations in terms of the proportions of households with three electrical appliances and how much time households spent each week from 1920 to 2019.
Overall
, the usage percentage of the household washing Linking Words
machine
, Use synonyms
refrigerator
and Use synonyms
vacuum
cleaner increased constantly over the period of Use synonyms
hundred
years. Correct article usage
a hundred
By contrast
, people spent less and less time on Linking Words
house work
.
With regard to the electrical appliances, in 1920, Use the right word
housework
citizen
almost never made use of the Fix the agreement mistake
citizens
refrigerator
, Use synonyms
while
the proportions of the washing Linking Words
machine
and the Use synonyms
vacuum
cleaner were 30% and 40%, respectively. Use synonyms
Subsequently
, the share of the Linking Words
refrigerator
witnessed a Use synonyms
significantly
growth, at 90% by 1960. Meanwhile, the proportions of the Replace the word
significant
vacuum
cleaner kept up with that of the washing Use synonyms
machine
, reaching 70%. Notably, the proportion of the Use synonyms
refrigerator
reached the plateau at 100% in Use synonyms
1980
followed by the Punctuation problem
1980,
vacuum
cleaner Use synonyms
which
peaked at 100% in 2000. Punctuation problem
, which
However
, the percentage of Linking Words
the
washing Correct article usage
apply
Use synonyms
machine
experienced a Fix the agreement mistake
machines
slightly
decline and Replace the word
slight
then
rose again from 1960 to 2019.
In terms of the figure of hours of housework each week, people allocated 50 hours Linking Words
on
it per week in 1920. The time spent Change preposition
to
in
housework decreased dramatically by 1960 (20%) and Change preposition
on
then
descended slightly by 2019 (10%).Linking Words