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The image contains two charts. The first chart, titled "Percentage of households with electrical appliances (1920–2019)," tracks household ownership of three appliances over different years. Washing machines start below 0% in 1920, rise to around 50% by 1960, approximately 70% by 1980, and around 100% in 2000 onwards. Refrigerators are at 0% in 1920, rise steeply to about 95% by 1960, and reach 100% from 1980 onwards. Vacuum cleaners start below 30% in 1920, increase to around 90% by 1960, and attain 100% between 1990 and 2000. The second chart titled "Number of hours of housework* per week, per household (1920–2019)" shows a decline in housework hours: starting at 50 hours in 1920, dropping to around 20 hours by 1960, further reducing to about 15 hours by 1980, and leveling off to about 10 hours from 2000 onwards.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph above ilustrate the correlation between the rise of electrical appliances and the amount of time doing housework in households from 1920 to 2019.
Overall, there was a general increased in the percentage of households with electrical appliances over several years. However, the line graph differs on the number of hours of houseworks with the same period.
There was a dramatic increased in adoption of all three appliances. Vacuum cleaner and refrigerator reached near 100% adoption by 2019. In comparison, washing machine showed a fluctuated growth with the start poin around 40% and grew steadilly until approximately 70%.
On the other hand, the amount of time spent doing housework in households remained decreased over the years. In the 1920, the averaged time to spent was 50 hours per week. By 2019, the line showed a declined trend to number just above 10 hours per week. To sum up, this line graph showed a inverse relationships as the ownerships of labor saving technology became standard, the weekly time dedicated to housework was reduced over the years.
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