The charts illustrate the percentage of families owning electrical appliances and the relative to amount of time they spend doing housework in nearly a century (1920-2019)
Overall, the percentage of families who owned washing machine, refrigerator and vacuum cleaner generally increased from 1920 to 2019, with the number of hours each household spent on chores reducing
According to the first line graph, 40% of families had a washing machine in 1920. This grew to around 75% in 2019, despite a slight drop between 1960 and 1980. The ownership percentage of refrigerators started at 30% in 1920, while the proportion of family owning vacuum cleaners was 0% in that year. The former increased gradually by nearly 50% in two periods: from 1920 to 1940 and 1940 to 1980, while the latter went up by around 20% per 20 years between 1920 and 1980. During the last 19 years, from 2000 to 2019, almost all the households had a refrigerator and vacuum cleaner.
Regarding the second line graph, each family did housework 50 hours per week in 1920, this number fell steadily over the years to about 15 hours in 1980. From that time onwards, the amount of time people spent doing housework stayed almost unchanged.