The line graphs provide information about the usage of washing machine, refrigerator and a vacuum cleaner by households and time spent on doing housework per week in one country from 1920 to 2019.
Overall, the ownership of electrical devices increased over the given time period with refrigerator showing the sharpest rise. Additionally, it is evident that as time went by, households spent less time doing housework.
More specifically, nobody was using the refrigerator in 1920. However, it experienced a dramatic increase, reaching over 50% in 1940 and about 100% in 1980. In contrast, the ownership of the vacuum cleaner and the washing machine stood at approximately around 30% and 40% in 1920, respectively. Following this, the figure for the vacuum cleaner rose steadily, so that in 2000 a point of around 100% was reached. Finally, in 2019 every household owned the refrigerator and the vacuum cleaner, while the washing machine experienced a slight decrease, recording just over 70% in 2019.
With regard to the number of hours of housework, it is clear that it fell considerably over the time period. Moreover, it started by 50 hours in 1920 and then steadily decreased, so that in 2019 households spent only about 10 hours doing housework.