The first line graph illustrates the proportion of owning electrical machines in accommodation in percentage in one country over 99 years , since 1920 to 2019. The second on indicates how many hours per week of utilising the household for doing the chores.
Overall, although the refrigerator and the vacuum cleaner started in different percentage of use, the end up with the same percentage in 2019. Furthermore, the hours of using electronic machine in cleaning experience a decrease over the years.
In terms of the percentage of using the machine, the utilise of vacuum increase steadily until 2000, then plateau at 100%. However, the use of refrigerator rose dramatically from 1920 to 1980 at 0% to 100%, and stayed stable from this time. In contrast, washing machines recorded fluctuated percentage and end at approximately 75%.
Regarding the hours of using these devices in house chores, the hours drops significantly from 1920 to 1960, from 50 hours to 30 hours. Following these years it decreased slightly to 10 hours.
