the data presented in the two pie charts illustrate the changes in the expenditure on 7 distinct categories by American citizens over a 30-year period, from 1966 to 1996.
Overall, food and cars accounted for the largest proportion in 1966 and 1996 respectively. Additionally, there was a decline in the amount of money US inhabitants spent on food, books, petrol, and furniture, whereas spending on other categories such as cars, computers, and restaurants experienced an increase over the given period.
In 1966, Food was the largest portion of investment at 44 percent, and showed a dramatic drop by 30 percent in 1996, making it the second highest category. During the period of 30 years, furniture and petrol both decreased to an equal figure of 8 percent. Meanwhile, the amount of money spent on books was the smallest portion of the chart at only 1 percent.
In terms of cars, its figure witnessed a significant increase from 23 percent to 45 percent, replacing food as the highest category in 1996. Likewise, US residents spent more on restaurants than they did previously, rising to 14 percent in 1996. Additionally, despite computers being the category with least expenditure , it rose steadily to 10 percent by the end of the period.