The two graphs provide information on what proportion of changes happened in the usage of electrical appliances by the owner 
as well as
 how many  Linking Words
hours
 were spent on household chores in a week from 1920 to 2019.
At the beginning of the period, the Washing machine was the most popular appliance in many households Use synonyms
although
, over the years it became the least used product at above 70%. In 1920, Refrigerator was not even used by most owners Linking Words
however
, in the next twenty years it jumped directly to approximately  55% and by the end of the period 2019, it became the most consumed appliance with the Vacuum cleaner reaching the peak of 100% marking that every household had these two appliances.
Linking Words
In addition
, As the appliances were getting used more by the owners of the household the number of Linking Words
hours
 Use synonyms
also
 started to drastically fall. Linking Words
For instance
, in the year 1920, most Linking Words
hours
 which were put in a week were at 50 Use synonyms
hours
 but it rapidly shrank to almost 20 Use synonyms
hours
 in 1960 and for the next thirty-nine years it  ranged between 20 Use synonyms
hours
 to 10 Use synonyms
hours
.Use synonyms