Please review my task 1 IELTS essay

Topic:

The charts below show the changes in ownership of electrical appliances and amount of time spent doing housework in household in one country between 1920 and 2019.

Write at least 150 words.

The given line charts illustrate the correlation between the proportion of households that own washing machines, refrigerator, or vacuum cleaner in a certain country and their weekly time spent on laundry, cooking, or washing up from 1920 to 2019. Overall, as more residents acquired electrical appliances, less time is spent on house-keeping tasks.
The three devices all experienced an upward trend. Washing machine had the highest starting point at 40 percent before peaking at 70 percent in 1960. After a slight drop 20 years later, it grew gradually and finished at roughly 75 percent. Vacuum cleaner ranked second at 30 percent in 1920, then leaped to 100 percent in 2000, where it remained until 2019. Washing machine was originally the least popular at around 0 percent. Nonetheless, there was an increase of 90 percent over the next 40 years, followed by a stable growth before achieving 100 percent during over the last 39 years.
Meanwhile, the average weekly hour of doing housework witnessed a downturn. In 1920, households spent 50 hours a week on these tasks. The number was decreased significantly by 30 hours before 1960. From then on, despite its slower speed, it continued falling until 2019, when it was over 10 hours per household. Notably, every line underwent drastic changes before 1960 and stabilized right after.

Thank you very much.