The first figure represents the proportion of available household electrical devices from 1920 to 2019.
While
the second graph illustrates the number of electrical devices consumed in the same given period. The units are measured by hours per week.
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Overall
, both refrigerators and Vacuum cleaners were the most popular during the given years. Linking Words
Furthermore
, they both recorded a rapid increase from 1920 to 2019. Linking Words
Likewise
, washing machines decreased slightly from 1960 to 1980 and Linking Words
then
experienced a slight risen. Linking Words
Moreover
, there was a considerable decline in the number of hours used for house duties over the period. Linking Words
This
indicates how much electrical devices reduced the number of hours needed for housework.
With regard to refrigerators, the figure started at zero value in 1920 and Linking Words
then
reported a significant climb until reaching a peak of 100 in 1980. After that, there was a steady state during the next three years. Similar to Vacuum cleaners which began at 30 in 1920 and Linking Words
then
rose until reach a peak of 100 in 2000, and Linking Words
then
there was no change in the next years. Linking Words
In contrast
, washing machines started at 40 in 1920 and Linking Words
then
rose to a peak of 70 before declining to the level of 65 in 1980.Linking Words
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