รายละเอียดตัวอย่าง

The first chart compares the usage of three electrical appliances of households from year 1920 to 2019. The second chart shows the number of housework per week from 1920 to 2019. Overall, it is clear that refrigerator experienced a maximum rise over the year. While, the least interest was shown by households were on washing machine. In 1920, refrigerator starts from 0%, reached over 50% in 1940, and then rose continously till 1960 by 90% and reached to 100% in 1980. After that, it remains stable till 2019 by 100%. Washing machine started from 40% in 1920 and went to 70% in 1960. After a slightly drop, it reached to 65% in 1980 and then increased slowly and touched 72% by the end of the year. Vacuum cleaner started from 30% and rose sharply till 100% in year 2000 and then remain stable till 2019. The hours spend on these appliances per week was 50% in 1920 which continously dipped to 20% in 1960, After flactuation it reached to 10% in 2019