The two line charts illustrate the variations in the percentage of electrical appliances and in the number of hours needed to do housework in a single country over a one-hundred period, from 1920 to 2019.
Overall, all the three appliances considered, washing machine, refrigerator and vacuum cleaner experienced a significant growth, though at completely different rates. These trends were negatively correlated with the hours spent doing housework, which fell consistently.
First, washing machines, which were the most owned appliances in 1920 (40% of people), had reached the 70% of households by 1960. In more recent years, after a low decrease in 1980, the figures show a slight rise to approximately 73% in 2019.
On the contrary, very few people possessed a refrigerator in 1920. However, over a 60-year period, data shows a drastic growth so that 100% of the population owed one of them.
Similarly, vacuum cleaners had a steady and considerable rise, from 30% in 1920 to 100% in 2000.
Interestingly, probably due to the introduction of these appliances, the number of hours spent doing housework descreased dramatically. From 50 hours per week in 1920 the number had more than halved by 1960 and continued to diminish more recently, reaching 10 hours.
The two line charts illustrate the variations in the percentage of electrical
appliances
and in the number of
hours
needed to do housework in a single country over a one-hundred period, from 1920 to 2019.
Overall
, all the three
appliances
considered, washing machine, refrigerator and vacuum cleaner experienced a significant growth, though at completely
different
rates. These trends were
negatively
correlated with the
hours
spent doing housework, which fell
consistently
.
First
, washing machines, which were the most
owned
appliances
in 1920 (40% of
people
), had reached the 70% of households by 1960. In more recent years, after a low decrease in 1980, the figures
show
a slight rise to approximately 73% in 2019.
On the contrary
,
very
few
people
possessed a refrigerator in 1920.
However
, over a 60-year period, data
shows
a drastic growth
so
that 100% of the population owed one of them.
Similarly
, vacuum cleaners had a steady and considerable rise, from 30% in 1920 to 100% in 2000.
Interestingly
,
probably
due to the introduction of these
appliances
, the number of
hours
spent doing housework
descreased
dramatically
. From 50
hours
per week in 1920 the number had more than halved by 1960 and continued to diminish more recently, reaching 10
hours
.